The Fermi Paradox With Neil deGrasse Tyson - Where Are All The Aliens?
Since the birth of philosophy, we've never stopped wondering about the answer to the question: Are we alone?
Neil deGrasse Tyson tackles the possibility of the prevalence of life in the cosmos by comparing our sole data-point we have, life on Earth. He points to the fact that life on Earth formed as soon as it had a chance after the late heavy bombardment period.
Neil deGrasse Tyson also extrapolates from the fossil record that Intelligence as we humans have defined it is not necessary for survival, therefore intelligent life in the cosmos might be extremely rare.
In the summer of 1950 Italian-American physicist Enrico Fermi, while walking to lunch with his fellow physicists was having a casual conversation about recent UFO reports and the possibility of faster-than-light travel. Allegedly Fermi suddenly during lunch said, "But where is everybody?
This later became known as the Fermi problem or paradox. Which is the apparent contradiction between the lack of evidence for extraterrestrial life and the high estimate probability for their existence.
So what could possibly explain this semblant paradox?
Whatever is preventing non-living matter from undergoing "Abiogenesis" in time, to expanding lasting life as measured by the Kardashev scale, in the context of the Fermi paradox, is known as the "Great Filter".
As NASA has explored our solar system and beyond, it has developed increasingly sophisticated tools to address our endless curiosity for the possibility of life existing elsewhere in the cosmos. Within our solar system, NASA’s missions have searched for signs of both ancient and current life, especially on Mars and soon, Jupiter’s moon Europa. Beyond our solar system, missions, such as Kepler, are revealing thousands of planets orbiting other stars. Fueling our imaginations further with bewilderment, wondering if there are other civilizations out there, perhaps asking the same question. Are we alone?
A growing number of people believe we've already answered this question due to recent UFO reports over the last few years. However, eye-witness testimony and ambiguous video footage does not qualify as extraordinary evidence to definitively answer this age old question. But to be respectful to the people who believe we've been visited by extraterrestrial crafts, we will dedicate a whole video on the topic.
#fermiparadox #neiltyson #aliens
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources: https://www.youtube.com/watch?v=rYzBxo3hbYQ&t=0s
https://en.wikipedia.org/wiki/Great_Filter#Fermi_paradox
https://exoplanets.nasa.gov/news/1350/are-we-alone-in-the-universe-revisiting-the-drake-equation/
https://www.nasa.gov/feature/nasa-is-taking-a-new-look-at-searching-for-life-beyond-earth
"Dr. Neil deGrasse Tyson Visits JWST and NASA Goddard" by James Webb Space Telescope is licensed under CC BY 2.0….
Neil deGrasse Tyson tackles the possibility of the prevalence of life in the cosmos by comparing our sole data-point we have, life on Earth. He points to the fact that life on Earth formed as soon as it had a chance after the late heavy bombardment period.
Neil deGrasse Tyson also extrapolates from the fossil record that Intelligence as we humans have defined it is not necessary for survival, therefore intelligent life in the cosmos might be extremely rare.
In the summer of 1950 Italian-American physicist Enrico Fermi, while walking to lunch with his fellow physicists was having a casual conversation about recent UFO reports and the possibility of faster-than-light travel. Allegedly Fermi suddenly during lunch said, "But where is everybody?
This later became known as the Fermi problem or paradox. Which is the apparent contradiction between the lack of evidence for extraterrestrial life and the high estimate probability for their existence.
So what could possibly explain this semblant paradox?
Whatever is preventing non-living matter from undergoing "Abiogenesis" in time, to expanding lasting life as measured by the Kardashev scale, in the context of the Fermi paradox, is known as the "Great Filter".
As NASA has explored our solar system and beyond, it has developed increasingly sophisticated tools to address our endless curiosity for the possibility of life existing elsewhere in the cosmos. Within our solar system, NASA’s missions have searched for signs of both ancient and current life, especially on Mars and soon, Jupiter’s moon Europa. Beyond our solar system, missions, such as Kepler, are revealing thousands of planets orbiting other stars. Fueling our imaginations further with bewilderment, wondering if there are other civilizations out there, perhaps asking the same question. Are we alone?
A growing number of people believe we've already answered this question due to recent UFO reports over the last few years. However, eye-witness testimony and ambiguous video footage does not qualify as extraordinary evidence to definitively answer this age old question. But to be respectful to the people who believe we've been visited by extraterrestrial crafts, we will dedicate a whole video on the topic.
#fermiparadox #neiltyson #aliens
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources: https://www.youtube.com/watch?v=rYzBxo3hbYQ&t=0s
https://en.wikipedia.org/wiki/Great_Filter#Fermi_paradox
https://exoplanets.nasa.gov/news/1350/are-we-alone-in-the-universe-revisiting-the-drake-equation/
https://www.nasa.gov/feature/nasa-is-taking-a-new-look-at-searching-for-life-beyond-earth
"Dr. Neil deGrasse Tyson Visits JWST and NASA Goddard" by James Webb Space Telescope is licensed under CC BY 2.0….
active
The Fermi Paradox With Neil deGrasse Tyson - Where Are All The Aliens?
Since the birth of philosophy, we've never stopped wondering about the [...]
Since the birth of philosophy, we've never stopped wondering about the answer to the question: Are we alone?
Neil deGrasse Tyson tackles the possibility of the prevalence of life in the cosmos by comparing our sole data-point we have, life on Earth. He points to the fact that life on Earth formed as soon as it had a chance after the late heavy bombardment period.
Neil deGrasse Tyson also extrapolates from the fossil record that Intelligence as we humans have defined it is not necessary for survival, therefore intelligent life in the cosmos might be extremely rare.
In the summer of 1950 Italian-American physicist Enrico Fermi, while walking to lunch with his fellow physicists was having a casual conversation about recent UFO reports and the possibility of faster-than-light travel. Allegedly Fermi suddenly during lunch said, "But where is everybody?
This later became known as the Fermi problem or paradox. Which is the apparent contradiction between the lack of evidence for extraterrestrial life and the high estimate probability for their existence.
So what could possibly explain this semblant paradox?
Whatever is preventing non-living matter from undergoing "Abiogenesis" in time, to expanding lasting life as measured by the Kardashev scale, in the context of the Fermi paradox, is known as the "Great Filter".
As NASA has explored our solar system and beyond, it has developed increasingly sophisticated tools to address our endless curiosity for the possibility of life existing elsewhere in the cosmos. Within our solar system, NASA’s missions have searched for signs of both ancient and current life, especially on Mars and soon, Jupiter’s moon Europa. Beyond our solar system, missions, such as Kepler, are revealing thousands of planets orbiting other stars. Fueling our imaginations further with bewilderment, wondering if there are other civilizations out there, perhaps asking the same question. Are we alone?
A growing number of people believe we've already answered this question due to recent UFO reports over the last few years. However, eye-witness testimony and ambiguous video footage does not qualify as extraordinary evidence to definitively answer this age old question. But to be respectful to the people who believe we've been visited by extraterrestrial crafts, we will dedicate a whole video on the topic.
#fermiparadox #neiltyson #aliens
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources: https://www.youtube.com/watch?v=rYzBxo3hbYQ&t=0s
https://en.wikipedia.org/wiki/Great_Filter#Fermi_paradox
https://exoplanets.nasa.gov/news/1350/are-we-alone-in-the-universe-revisiting-the-drake-equation/
https://www.nasa.gov/feature/nasa-is-taking-a-new-look-at-searching-for-life-beyond-earth
"Dr. Neil deGrasse Tyson Visits JWST and NASA Goddard" by James Webb Space Telescope is licensed under CC BY 2.0….
Neil deGrasse Tyson tackles the possibility of the prevalence of life in the cosmos by comparing our sole data-point we have, life on Earth. He points to the fact that life on Earth formed as soon as it had a chance after the late heavy bombardment period.
Neil deGrasse Tyson also extrapolates from the fossil record that Intelligence as we humans have defined it is not necessary for survival, therefore intelligent life in the cosmos might be extremely rare.
In the summer of 1950 Italian-American physicist Enrico Fermi, while walking to lunch with his fellow physicists was having a casual conversation about recent UFO reports and the possibility of faster-than-light travel. Allegedly Fermi suddenly during lunch said, "But where is everybody?
This later became known as the Fermi problem or paradox. Which is the apparent contradiction between the lack of evidence for extraterrestrial life and the high estimate probability for their existence.
So what could possibly explain this semblant paradox?
Whatever is preventing non-living matter from undergoing "Abiogenesis" in time, to expanding lasting life as measured by the Kardashev scale, in the context of the Fermi paradox, is known as the "Great Filter".
As NASA has explored our solar system and beyond, it has developed increasingly sophisticated tools to address our endless curiosity for the possibility of life existing elsewhere in the cosmos. Within our solar system, NASA’s missions have searched for signs of both ancient and current life, especially on Mars and soon, Jupiter’s moon Europa. Beyond our solar system, missions, such as Kepler, are revealing thousands of planets orbiting other stars. Fueling our imaginations further with bewilderment, wondering if there are other civilizations out there, perhaps asking the same question. Are we alone?
A growing number of people believe we've already answered this question due to recent UFO reports over the last few years. However, eye-witness testimony and ambiguous video footage does not qualify as extraordinary evidence to definitively answer this age old question. But to be respectful to the people who believe we've been visited by extraterrestrial crafts, we will dedicate a whole video on the topic.
#fermiparadox #neiltyson #aliens
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources: https://www.youtube.com/watch?v=rYzBxo3hbYQ&t=0s
https://en.wikipedia.org/wiki/Great_Filter#Fermi_paradox
https://exoplanets.nasa.gov/news/1350/are-we-alone-in-the-universe-revisiting-the-drake-equation/
https://www.nasa.gov/feature/nasa-is-taking-a-new-look-at-searching-for-life-beyond-earth
"Dr. Neil deGrasse Tyson Visits JWST and NASA Goddard" by James Webb Space Telescope is licensed under CC BY 2.0….
active
The Dawn of Superhumans - Evolution 2.0
We are on the verge of a new era that belongs to Superhumans. The next [...]
We are on the verge of a new era that belongs to Superhumans. The next step of our evolution is not going to be natural but rather a technological one. Superhumans will most likely dominate the 21st century.
Throughout history, the discussion of superhuman traits and the idea of the ideal human in physical, mental, or psychological form has influenced our thoughts and understanding of the world and the reality that surrounds us. While the concept of superpowers is still firmly rooted in the world of fiction, recent scientific and technological advancements have put the concept of "Superhumans" in a very different context.
The rise of "Superhumans" in the scientific and technological world has brought about an entirely new kind of discussion on who we are as a species. While the idea of a superhuman may be provocative and controversial to some, others embrace the concept as a means to investigate our future – our evolution.
In the future, thanks to technologies such as CRISPR, it would be possible to alter the human genome in such a way that every human being could be born with a genetic predisposition to a greater degree of strength, intelligence, speed and so on. The rise of enhanced humans could bring about a new era of human evolution. This would have profound advantages over traditional genetic mutations that occur in nature. First, it would allow researchers to control what kind of changes they made and how those changes would affect an individual's physical and psychological development.
How will this technology affect us as a society? Will it be abused? Who will benefit from this technology?
Will those who don’t have access to the technology be left behind in a society where they are no longer able to keep up? Questions like these have many people worried about the future, but it is undeniable that we are on the verge of a new era of evolution in which humans will be able to increase their intelligence and capabilities beyond imagination.
#CRISPR #Superhuman #Science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources
Race, Evolution and the Science of Human Origins" by Allison Hopper, Scientific American (July 5, 2021)
How to develop superpowers - https://eagleman.com/latest/how-to-develop-superpowers/
David Eagleman - https://eagleman.com/about-david-eagleman/
The next generation of hearing science - https://neosensory.com/
Is CRISPR a fear against Sports? https://www.peertechzpublications.com/articles/ASMP-2-106.php
Genetic evidence for natural selection in humans in the contemporary United States - https://www.pnas.org/content/113/28/7774
The Effect of ACTN3 Gene Doping on Skeletal Muscle Performance- https://pubmed.ncbi.nlm.nih.gov/29706347/
Genetic influence on athletic performance - Current Opinion in Pediatrics: December 2013 - Volume 25 - Issue 6 - p 653-658 doi: 10.1097/MOP.0b013e3283659087
The New York Academy of Sciences - The Enhanced Human: Risks and Opportunities
Creating New Human Senses | David Eagleman | Talks at Google - https://youtu.be/3epJuzVfvgc
How to Create a Mind | Ray Kurzweil | Talks at Google https://youtu.be/zihTWh5i2C4
George Church Talks Ethics of Transformative Biotechnologies - https://www.emmanuel.edu/discover-emmanuel/news-and-media/churchseminar.html
Human Enhancement: Impact on society - https://www.sienna-project.eu/enhancement/….
Throughout history, the discussion of superhuman traits and the idea of the ideal human in physical, mental, or psychological form has influenced our thoughts and understanding of the world and the reality that surrounds us. While the concept of superpowers is still firmly rooted in the world of fiction, recent scientific and technological advancements have put the concept of "Superhumans" in a very different context.
The rise of "Superhumans" in the scientific and technological world has brought about an entirely new kind of discussion on who we are as a species. While the idea of a superhuman may be provocative and controversial to some, others embrace the concept as a means to investigate our future – our evolution.
In the future, thanks to technologies such as CRISPR, it would be possible to alter the human genome in such a way that every human being could be born with a genetic predisposition to a greater degree of strength, intelligence, speed and so on. The rise of enhanced humans could bring about a new era of human evolution. This would have profound advantages over traditional genetic mutations that occur in nature. First, it would allow researchers to control what kind of changes they made and how those changes would affect an individual's physical and psychological development.
How will this technology affect us as a society? Will it be abused? Who will benefit from this technology?
Will those who don’t have access to the technology be left behind in a society where they are no longer able to keep up? Questions like these have many people worried about the future, but it is undeniable that we are on the verge of a new era of evolution in which humans will be able to increase their intelligence and capabilities beyond imagination.
#CRISPR #Superhuman #Science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources
Race, Evolution and the Science of Human Origins" by Allison Hopper, Scientific American (July 5, 2021)
How to develop superpowers - https://eagleman.com/latest/how-to-develop-superpowers/
David Eagleman - https://eagleman.com/about-david-eagleman/
The next generation of hearing science - https://neosensory.com/
Is CRISPR a fear against Sports? https://www.peertechzpublications.com/articles/ASMP-2-106.php
Genetic evidence for natural selection in humans in the contemporary United States - https://www.pnas.org/content/113/28/7774
The Effect of ACTN3 Gene Doping on Skeletal Muscle Performance- https://pubmed.ncbi.nlm.nih.gov/29706347/
Genetic influence on athletic performance - Current Opinion in Pediatrics: December 2013 - Volume 25 - Issue 6 - p 653-658 doi: 10.1097/MOP.0b013e3283659087
The New York Academy of Sciences - The Enhanced Human: Risks and Opportunities
Creating New Human Senses | David Eagleman | Talks at Google - https://youtu.be/3epJuzVfvgc
How to Create a Mind | Ray Kurzweil | Talks at Google https://youtu.be/zihTWh5i2C4
George Church Talks Ethics of Transformative Biotechnologies - https://www.emmanuel.edu/discover-emmanuel/news-and-media/churchseminar.html
Human Enhancement: Impact on society - https://www.sienna-project.eu/enhancement/….
active
Brian Greene - Is Teleportation Possible?
Brian Greene the renowned American theoretical physicist talks about [...]
Brian Greene the renowned American theoretical physicist talks about quantum teleportation, quantum entanglement and whether it's possible to teleport a human being.
Brian Greene is most famously known for his work on string theory. He also has become known to a wider audience through his books for the general public, The Elegant Universe, Icarus at the Edge of Time, The Fabric of the Cosmos, The Hidden Reality etc.
He explains the concept behind what Einstein famously called "spooky action at a distance". He also mentions how Einstein's work on the Photoelectric effect was fundamental in the formulation of quantum mechanics. Brian Greene also explains how quantum entanglement can be used for teleportation.
Many works of science fiction have enticed our imagination with human teleportation. But, does it have any basis in reality?
Teleportation is the hypothetical transfer of matter or energy from one point to another without traversing the physical space between them.
While teleportation of matter is currently outside the realm of modern science, in the quantum world, teleportation of information has already shown its use cases.
Quantum teleportation is a technique for transferring quantum information from a sender at one location to a receiver some distance away. While teleportation is commonly portrayed in science fiction as a means to transfer physical objects from one location to the next, quantum teleportation only transfers quantum information.
Quantum communication unlocks some of the unique properties of quantum mechanics to exchange information with ultimate security or link together quantum computers.”
According to IBM, the advent of quantum computing may progress the fields of medicine, logistics, financial services, artificial intelligence and cloud security.
And while teleportation of matter remains an intriguing enterprise in science fiction, we are more than grateful quantum teleportation of information is real, and holds a promising future for a 21st century technological society.
#teleportation #bgreene #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
https://www.youtube.com/watch?v=h94Rd9AIfwE
https://www.youtube.com/watch?v=HneFM-BvZj4
https://www.nasa.gov/feature/jpl/teleporting-toward-a-quantum-internet
https://en.wikipedia.org/wiki/Teleportation
https://www.nsf.gov/discoveries/disc_summ.jsp?cntn_id=300854&org=NSF&from=news
"Renowned Physicist Brian Greene Draws Sold Out Crowd at College of DuPage 2018 8" by COD Newsroom is licensed under CC BY 2.0….
Brian Greene is most famously known for his work on string theory. He also has become known to a wider audience through his books for the general public, The Elegant Universe, Icarus at the Edge of Time, The Fabric of the Cosmos, The Hidden Reality etc.
He explains the concept behind what Einstein famously called "spooky action at a distance". He also mentions how Einstein's work on the Photoelectric effect was fundamental in the formulation of quantum mechanics. Brian Greene also explains how quantum entanglement can be used for teleportation.
Many works of science fiction have enticed our imagination with human teleportation. But, does it have any basis in reality?
Teleportation is the hypothetical transfer of matter or energy from one point to another without traversing the physical space between them.
While teleportation of matter is currently outside the realm of modern science, in the quantum world, teleportation of information has already shown its use cases.
Quantum teleportation is a technique for transferring quantum information from a sender at one location to a receiver some distance away. While teleportation is commonly portrayed in science fiction as a means to transfer physical objects from one location to the next, quantum teleportation only transfers quantum information.
Quantum communication unlocks some of the unique properties of quantum mechanics to exchange information with ultimate security or link together quantum computers.”
According to IBM, the advent of quantum computing may progress the fields of medicine, logistics, financial services, artificial intelligence and cloud security.
And while teleportation of matter remains an intriguing enterprise in science fiction, we are more than grateful quantum teleportation of information is real, and holds a promising future for a 21st century technological society.
#teleportation #bgreene #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
https://www.youtube.com/watch?v=h94Rd9AIfwE
https://www.youtube.com/watch?v=HneFM-BvZj4
https://www.nasa.gov/feature/jpl/teleporting-toward-a-quantum-internet
https://en.wikipedia.org/wiki/Teleportation
https://www.nsf.gov/discoveries/disc_summ.jsp?cntn_id=300854&org=NSF&from=news
"Renowned Physicist Brian Greene Draws Sold Out Crowd at College of DuPage 2018 8" by COD Newsroom is licensed under CC BY 2.0….
active
What Happens to Your Brain When You Don't Get Enough Sleep?
For millennia, philosophers and scientists have tried to unravel the [...]
For millennia, philosophers and scientists have tried to unravel the mystery of sleep and dreams. Some researchers believe that sleep helps us consolidate memory and learn new things, while others suggest that we need a break from thinking so that the brain can process information or recover from a busy day.
You spend about 2 hours each night dreaming and while many of us may feel that our dreams have special meaning or a useful purpose, science has been more sceptical of that claim. Dreaming serves its own important functions in our well-being. It is like overnight therapy that also enhances creativity and problem-solving. This, according to Matthew Walker, Professor of Neuroscience and Psychology at the University of California, Berkeley, and Founder and Director of the Center for Human Sleep Science.
His research is focused in solving the mystery of why sleep matters and the role of sleep in human health and well-being.
Most adults need 7-9 hours of sleep a night, but after age 60, night-time sleep tends to be shorter, lighter, and interrupted by multiple awakenings. It is a known fact that if we do not get enough sleep, our performance deteriorates and it becomes harder to pay attention or concentrate. In addition, circumstances like depression or stress can lead to insomnia and many other sleep disorders. Sleep deprivation has been linked to a variety of health problems, including diabetes, obesity and cardiovascular disease.
The cumulative effect of not getting enough sleep is called sleep debt. A large sleep debt may lead to mental or physical fatigue. According to Walker, a lack of sleep will actually prevent your brain from being able to initially make new memories, so it's almost as though without sleep the memory inbox of the brain shuts down and you can't commit new experiences to memory. In addition, sleep is essentially the pillar of healthy emotion regulation. This is because sleep allows us to integrate and process the emotional events and social interactions of the previous day. Without this crucial step, you walk around emotionally disoriented – a state that can lead to chronic stress and depression. Sleep is also a time when your body builds up energy reserves for your next waking day. Sleep deprivation makes it harder to maintain healthy blood sugar levels which can result in fatigue, low moods, and poor concentration.
So, what can you do to sleep better at night?
According to Walker, certain specific actions will help you get better sleep that is also proven to be good for your health.
Besides the common advice of avoiding caffeine and nicotine late in the day and alcoholic drinks before bed, think of your bedroom as a dark prehistoric cave. Get rid of all your electronic devices from your bedroom. Because, even if you manage to fall asleep by watching videos on your phone, computer or TV, that might be the reason that you wake up with a headache and feeling tired in the morning.
#sleep #science #sciencetime
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
Why We Sleep: Unlocking the Power of Sleep and Dreams Matthew Walker , PhD
Hardcover, 1st edition, 368 pages - Published October 3rd 2017 by Scribner
https://vcresearch.berkeley.edu/research-unit/center-human-sleep-science
https://www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Understanding-Sleep
https://www.healthline.com/health/sleep-deprivation/effects-on-body#Treatment-for-sleep-deprivation
https://www.sleepfoundation.org/how-sleep-works/stages-of-sleep
Why we sleep, science of sleep & dreams - Talks at Google - Matthew Walker https://youtu.be/aXflBZXAucQ….
You spend about 2 hours each night dreaming and while many of us may feel that our dreams have special meaning or a useful purpose, science has been more sceptical of that claim. Dreaming serves its own important functions in our well-being. It is like overnight therapy that also enhances creativity and problem-solving. This, according to Matthew Walker, Professor of Neuroscience and Psychology at the University of California, Berkeley, and Founder and Director of the Center for Human Sleep Science.
His research is focused in solving the mystery of why sleep matters and the role of sleep in human health and well-being.
Most adults need 7-9 hours of sleep a night, but after age 60, night-time sleep tends to be shorter, lighter, and interrupted by multiple awakenings. It is a known fact that if we do not get enough sleep, our performance deteriorates and it becomes harder to pay attention or concentrate. In addition, circumstances like depression or stress can lead to insomnia and many other sleep disorders. Sleep deprivation has been linked to a variety of health problems, including diabetes, obesity and cardiovascular disease.
The cumulative effect of not getting enough sleep is called sleep debt. A large sleep debt may lead to mental or physical fatigue. According to Walker, a lack of sleep will actually prevent your brain from being able to initially make new memories, so it's almost as though without sleep the memory inbox of the brain shuts down and you can't commit new experiences to memory. In addition, sleep is essentially the pillar of healthy emotion regulation. This is because sleep allows us to integrate and process the emotional events and social interactions of the previous day. Without this crucial step, you walk around emotionally disoriented – a state that can lead to chronic stress and depression. Sleep is also a time when your body builds up energy reserves for your next waking day. Sleep deprivation makes it harder to maintain healthy blood sugar levels which can result in fatigue, low moods, and poor concentration.
So, what can you do to sleep better at night?
According to Walker, certain specific actions will help you get better sleep that is also proven to be good for your health.
Besides the common advice of avoiding caffeine and nicotine late in the day and alcoholic drinks before bed, think of your bedroom as a dark prehistoric cave. Get rid of all your electronic devices from your bedroom. Because, even if you manage to fall asleep by watching videos on your phone, computer or TV, that might be the reason that you wake up with a headache and feeling tired in the morning.
#sleep #science #sciencetime
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
Why We Sleep: Unlocking the Power of Sleep and Dreams Matthew Walker , PhD
Hardcover, 1st edition, 368 pages - Published October 3rd 2017 by Scribner
https://vcresearch.berkeley.edu/research-unit/center-human-sleep-science
https://www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Understanding-Sleep
https://www.healthline.com/health/sleep-deprivation/effects-on-body#Treatment-for-sleep-deprivation
https://www.sleepfoundation.org/how-sleep-works/stages-of-sleep
Why we sleep, science of sleep & dreams - Talks at Google - Matthew Walker https://youtu.be/aXflBZXAucQ….
active
The Early Universe Explained by Neil deGrasse Tyson
Neil deGrasse Tyson explains the early state of our Universe. At the [...]
Neil deGrasse Tyson explains the early state of our Universe. At the beginning of the universe, ordinary space and time developed out of a primeval state, where all matter and energy of the entire visible universe was contained in a hot, dense point called a gravitational singularity. A billionth the size of a nuclear particle.
While we can not imagine the entirety of the visible universe being a billion times smaller than a nuclear particle, that shouldn't deter us from wondering about the early state of our universe. However, dealing with such extreme scales is immensely counter-intuitive and our evolved brains and senses have no capacity to grasp the depths of reality in the beginning of cosmic time. Therefore, scientists develop mathematical frameworks to describe the early universe.
Neil deGrasse Tyson also mentions that our senses are not necessarily the best tools to use in science when uncovering the mysteries of the Universe.
It is interesting to note that in the early Universe, high densities and heterogeneous conditions could have led sufficiently dense regions to undergo gravitational collapse, forming black holes. These types of Primordial black holes are hypothesized to have formed soon after the Big Bang. Going from one mystery to the next, some evidence suggests a possible Link Between Primordial Black Holes and Dark Matter.
In modern physics, antimatter is made up of elementary particles, each of which has the same mass as their corresponding matter counterparts -- protons, neutrons and electrons -- but the opposite charges and magnetic properties.
A collision between any particle and its anti-particle partner leads to their mutual annihilation, giving rise to various proportions of intense photons, gamma rays and neutrinos. The majority of the total energy of annihilation emerges in the form of ionizing radiation. If surrounding matter is present, the energy content of this radiation will be absorbed and converted into other forms of energy, such as heat or light. The amount of energy released is usually proportional to the total mass of the collided matter and antimatter, in accordance with Einstein's mass–energy equivalence equation.
Antimatter particles bind with each other to form antimatter, just as ordinary particles bind to form normal matter. For example, a positron (the antiparticle of the electron) and an antiproton (the antiparticle of the proton) can form an anti-hydrogen atom.
While these cosmic quandaries keep astrophysicists up at night, we are more than grateful to be alive in a time where we can even begin to contemplate the mysteries of the universe and our place in it.
#Universe #neiltyson #science
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SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
Neil deGrasse Tyson at 92Y : https://www.youtube.com/watch?v=AyAK3QBnMGQ
NASA article: https://www.nasa.gov/mission_pages/chandra/news/08-160.html
https://www.nasa.gov/feature/goddard/2016/nasa-scientist-suggests-possible-link-between-primordial-black-holes-and-dark-matter
https://en.wikipedia.org/wiki/Antimatter
https://en.wikipedia.org/wiki/Timeline_of_the_early_universe
"Dr. Neil deGrasse Tyson Visits JWST and NASA Goddard" by James Webb Space Telescope is licensed under CC BY 2.0….
While we can not imagine the entirety of the visible universe being a billion times smaller than a nuclear particle, that shouldn't deter us from wondering about the early state of our universe. However, dealing with such extreme scales is immensely counter-intuitive and our evolved brains and senses have no capacity to grasp the depths of reality in the beginning of cosmic time. Therefore, scientists develop mathematical frameworks to describe the early universe.
Neil deGrasse Tyson also mentions that our senses are not necessarily the best tools to use in science when uncovering the mysteries of the Universe.
It is interesting to note that in the early Universe, high densities and heterogeneous conditions could have led sufficiently dense regions to undergo gravitational collapse, forming black holes. These types of Primordial black holes are hypothesized to have formed soon after the Big Bang. Going from one mystery to the next, some evidence suggests a possible Link Between Primordial Black Holes and Dark Matter.
In modern physics, antimatter is made up of elementary particles, each of which has the same mass as their corresponding matter counterparts -- protons, neutrons and electrons -- but the opposite charges and magnetic properties.
A collision between any particle and its anti-particle partner leads to their mutual annihilation, giving rise to various proportions of intense photons, gamma rays and neutrinos. The majority of the total energy of annihilation emerges in the form of ionizing radiation. If surrounding matter is present, the energy content of this radiation will be absorbed and converted into other forms of energy, such as heat or light. The amount of energy released is usually proportional to the total mass of the collided matter and antimatter, in accordance with Einstein's mass–energy equivalence equation.
Antimatter particles bind with each other to form antimatter, just as ordinary particles bind to form normal matter. For example, a positron (the antiparticle of the electron) and an antiproton (the antiparticle of the proton) can form an anti-hydrogen atom.
While these cosmic quandaries keep astrophysicists up at night, we are more than grateful to be alive in a time where we can even begin to contemplate the mysteries of the universe and our place in it.
#Universe #neiltyson #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
Neil deGrasse Tyson at 92Y : https://www.youtube.com/watch?v=AyAK3QBnMGQ
NASA article: https://www.nasa.gov/mission_pages/chandra/news/08-160.html
https://www.nasa.gov/feature/goddard/2016/nasa-scientist-suggests-possible-link-between-primordial-black-holes-and-dark-matter
https://en.wikipedia.org/wiki/Antimatter
https://en.wikipedia.org/wiki/Timeline_of_the_early_universe
"Dr. Neil deGrasse Tyson Visits JWST and NASA Goddard" by James Webb Space Telescope is licensed under CC BY 2.0….
active
The Era of Genetically Modified Superhumans
The late 21st century belongs to Superhumans. Technological progress [...]
The late 21st century belongs to Superhumans. Technological progress in the field of medicine through gene editing tools like CRISPR is going to revolutionize what it means to be human. The age of Superhumans is portrayed in many science fiction movies, but for the first time in our species history, radically altering our genome is going to be possible through the methods and tools of science.
The gene-editing tool CRISPR, short for clustered regularly interspaced short palindromic repeats, could help us to reprogram life. It gives scientists more power and precision than they have ever had to alter human DNA.
Genetic engineering holds great promise for the future of humanity. A growing number of scientists including David Sinclair believe that we will soon be able to engineer and change our genes in a way that will help us live longer and healthier lives.
But how much should we really tinker with our own nature? What is the moral responsibility of scientists and humans towards future generations?
With technological advances in molecular biology like CRISPR that allow for specific gene editing approaches, many scientists argue that there are strong potential benefits as well as risks to human genetic engineering.
David Sinclair is a geneticist at Harvard Medical School. He believes it’s possible to unlock the fountain of youth.
The potential uses of such gene editing techniques could range from the treatment of disease to the enhancement of beauty and intelligence
New discoveries in gene editing technologies are popping up everywhere in the world and experts predict that we will see many more in coming years. Many scientists believe that genetic engineering is the future of our evolution. It provides us with a chance to give ourselves any traits we want, such as muscle mass or eye color. Basically, anything is possible.
#CRISPR #Superhuman #davidasinclair
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SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
Veit, W. (2018). Procreative Beneficence and Genetic Enhancement – KRITERION – Journal of Philosophy 32(1):75-92. https://doi.org/10.13140/RG.2.2.11026.89289
Liang, P., et. al., “CRISPR/Cas9-mediated gene editing in humantripronuclear zygotes” Protein & Cell Volume 6, Issue 5 (2015), pp363-372
Savulescu, J., Sandberg, A. & Kahane, G. Enhancing Human Ca-pacities, Blackwell Publishing Ltd. 2011
David Sinclair - Why we age and why we don't have to? Gogle Talks - https://youtu.be/9nXop2lLDa4 Accessed 01.06.2021
Dr. Jennifer Doudna discusses gene-editing at the Institute for Int'l Studies - https://youtu.be/9Yblg9wDHZA Accessed 02.06.2021
George Church: The Future Without Limit - https://www.nationalgeographic.com/science/article/140602-george-church-innovation-biology-science-genetics-de-extinction Accessed 18.06.2021
George Church on the revolution in and future of dna editing - https://openbeelden.nl/media/1000836/George_Church_on_the_revolution_in_and_future_of_dna_editing.en Accessed 15.06.2021
Technology Will Soon Give Us Precise Control Over Our Brains and Genes - University of California San Francisco - https://www.ucsf.edu/magazine/technology-will-soon-give-us-precise-control-over-our-brains-and-genes Accessed 10.06.2021….
The gene-editing tool CRISPR, short for clustered regularly interspaced short palindromic repeats, could help us to reprogram life. It gives scientists more power and precision than they have ever had to alter human DNA.
Genetic engineering holds great promise for the future of humanity. A growing number of scientists including David Sinclair believe that we will soon be able to engineer and change our genes in a way that will help us live longer and healthier lives.
But how much should we really tinker with our own nature? What is the moral responsibility of scientists and humans towards future generations?
With technological advances in molecular biology like CRISPR that allow for specific gene editing approaches, many scientists argue that there are strong potential benefits as well as risks to human genetic engineering.
David Sinclair is a geneticist at Harvard Medical School. He believes it’s possible to unlock the fountain of youth.
The potential uses of such gene editing techniques could range from the treatment of disease to the enhancement of beauty and intelligence
New discoveries in gene editing technologies are popping up everywhere in the world and experts predict that we will see many more in coming years. Many scientists believe that genetic engineering is the future of our evolution. It provides us with a chance to give ourselves any traits we want, such as muscle mass or eye color. Basically, anything is possible.
#CRISPR #Superhuman #davidasinclair
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
Veit, W. (2018). Procreative Beneficence and Genetic Enhancement – KRITERION – Journal of Philosophy 32(1):75-92. https://doi.org/10.13140/RG.2.2.11026.89289
Liang, P., et. al., “CRISPR/Cas9-mediated gene editing in humantripronuclear zygotes” Protein & Cell Volume 6, Issue 5 (2015), pp363-372
Savulescu, J., Sandberg, A. & Kahane, G. Enhancing Human Ca-pacities, Blackwell Publishing Ltd. 2011
David Sinclair - Why we age and why we don't have to? Gogle Talks - https://youtu.be/9nXop2lLDa4 Accessed 01.06.2021
Dr. Jennifer Doudna discusses gene-editing at the Institute for Int'l Studies - https://youtu.be/9Yblg9wDHZA Accessed 02.06.2021
George Church: The Future Without Limit - https://www.nationalgeographic.com/science/article/140602-george-church-innovation-biology-science-genetics-de-extinction Accessed 18.06.2021
George Church on the revolution in and future of dna editing - https://openbeelden.nl/media/1000836/George_Church_on_the_revolution_in_and_future_of_dna_editing.en Accessed 15.06.2021
Technology Will Soon Give Us Precise Control Over Our Brains and Genes - University of California San Francisco - https://www.ucsf.edu/magazine/technology-will-soon-give-us-precise-control-over-our-brains-and-genes Accessed 10.06.2021….
active
Brian Greene - What Was There Before The Big Bang?
The American theoretical physicist, Brian Greene explains various [...]
The American theoretical physicist, Brian Greene explains various hypotheses about the causation of the big bang. Brian Greene is an excellent science communicator and he makes complex cosmological concepts more easy to understand.
The Big Bang explains the evolution of the universe from a starting density and temperature that is currently well beyond humanity's capability to replicate. Thus the most extreme conditions and earliest times of the universe are speculative and any explanation for what caused the big bang should be taken with a grain of salt. Nevertheless that shouldn't stop us to ask questions like what was there before the big bang.
Brian Greene mentions the possibility that time itself may have originated with the birth of the cosmos about 13.8 billion years ago.
To understand how the Universe came to be, scientists combine mathematical models with observations and develop workable theories which explain the evolution of the cosmos. The Big Bang theory, which is built upon the equations of classical general relativity, indicates a singularity at the origin of cosmic time.
However, the physical theories of general relativity and quantum mechanics as currently realized are not applicable before the Planck epoch, which is the earliest period of time in the history of the universe, and correcting this will require the development of a correct treatment of quantum gravity.
Certain quantum gravity treatments imply that time itself could be an emergent property. Which leads some physicists to conclude that time did not exist before the Big Bang. While others are open to the possibility of time preceding the big bang.
One of the common misconceptions about the Big Bang model is that it fully explains the origin of the universe. However, the Big Bang model does not describe how energy, time, and space were caused, but rather it describes the emergence of the present universe from an ultra-dense and high-temperature initial state. It is misleading to visualize the Big Bang by comparing its size to everyday objects. When the size of the universe at Big Bang is described, it refers to the size of the observable universe, and not the entire universe.
#bigbang #bgreene #science
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SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
Briang Greene at JRE: https://www.youtube.com/watch?v=FHAA_1Guxlo&ab_channel=JREClips
NDT: https://www.youtube.com/watch?v=rYzBxo3hbYQ&t=0s&ab_channel=DiscoveryPandaDiscoveryPanda
https://science.nasa.gov/astrophysics/focus-areas/what-powered-the-big-bang
https://en.wikipedia.org/wiki/Big_Bang
https://en.wikipedia.org/wiki/Chronology_of_the_universe
"Brian Greene no Fronteiras do Pensamento Porto Alegre 2014" by fronteirasweb is licensed under CC BY-SA 2.0….
The Big Bang explains the evolution of the universe from a starting density and temperature that is currently well beyond humanity's capability to replicate. Thus the most extreme conditions and earliest times of the universe are speculative and any explanation for what caused the big bang should be taken with a grain of salt. Nevertheless that shouldn't stop us to ask questions like what was there before the big bang.
Brian Greene mentions the possibility that time itself may have originated with the birth of the cosmos about 13.8 billion years ago.
To understand how the Universe came to be, scientists combine mathematical models with observations and develop workable theories which explain the evolution of the cosmos. The Big Bang theory, which is built upon the equations of classical general relativity, indicates a singularity at the origin of cosmic time.
However, the physical theories of general relativity and quantum mechanics as currently realized are not applicable before the Planck epoch, which is the earliest period of time in the history of the universe, and correcting this will require the development of a correct treatment of quantum gravity.
Certain quantum gravity treatments imply that time itself could be an emergent property. Which leads some physicists to conclude that time did not exist before the Big Bang. While others are open to the possibility of time preceding the big bang.
One of the common misconceptions about the Big Bang model is that it fully explains the origin of the universe. However, the Big Bang model does not describe how energy, time, and space were caused, but rather it describes the emergence of the present universe from an ultra-dense and high-temperature initial state. It is misleading to visualize the Big Bang by comparing its size to everyday objects. When the size of the universe at Big Bang is described, it refers to the size of the observable universe, and not the entire universe.
#bigbang #bgreene #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
Briang Greene at JRE: https://www.youtube.com/watch?v=FHAA_1Guxlo&ab_channel=JREClips
NDT: https://www.youtube.com/watch?v=rYzBxo3hbYQ&t=0s&ab_channel=DiscoveryPandaDiscoveryPanda
https://science.nasa.gov/astrophysics/focus-areas/what-powered-the-big-bang
https://en.wikipedia.org/wiki/Big_Bang
https://en.wikipedia.org/wiki/Chronology_of_the_universe
"Brian Greene no Fronteiras do Pensamento Porto Alegre 2014" by fronteirasweb is licensed under CC BY-SA 2.0….
active
Elon Musk: The NEXT GEN Astronaut & The Future of Space Exploration
Elon Musk the founder and chief engineer at SpaceX is one of the most [...]
Elon Musk the founder and chief engineer at SpaceX is one of the most influential people on the planet when it comes to technological advancements for space exploration. The astronaut of the future will most likely be affected by his company SpaceX.
Elon Musk hired Hollywood costume designer Jose Fernandez to design a spacesuit for SpaceX. The design was then handed over to spacesuit engineers currently working in the field to transform it into an actual functional spacesuit.
A major goal of the private space industry is to make space travel accessible, affordable, and safe. But it’s not just space tourism that will become a reality in the coming decades. NASA and its private space industry partners will also enable the creation of permanent human settlements in space.
Elon Musk announced that he wants the NEXT GEN spacesuit of the astronaut of the future to not only serve technical purposes but in his words to also look cool.
NASA developed a new spacesuit that will be worn on Artemis missions. It is called the Exploration Extravehicular Mobility Unit, or xEMU.
The 21st century upgrades for the suit that the next moonwalkers will wear will utilize a variety of technological innovations in order to provide a balance between being comfortable, protective, lightweight and flexible. The use of nanotechnology can aid the development of next generation spacesuits because it allows for a unique combination of specialized materials to be used that are tailored specifically for the astronaut's needs and are highly functional.
NASA will continue to push the limits by exploring new frontiers and inviting private sector innovation in the process. They will lead an innovative and sustainable program of exploration with commercial and international partners to send humans farther into space and bring them back home safely.
In order to achieve that, NASA is upgrading all the launch facilities at Kennedy Space Center in Florida that will support Artemis missions to the Moon and beyond. Its newest super heavy lift rocket is called the Space Launch System or SLS.
The Orion spacecraft will carry crew to lunar orbit where they will transfer to a human landing system or the Lunar Gateway.
NASA picked SpaceX to move forward with their Starship HLS design for a crewed demonstration to the surface of the Moon.
Elon Musk was delighted that NASA picked his company for the trip to the moon. Elon said that it has been almost half of a century since we've been to the moon and its about time that we go back there and perhaps even establish a long term base on the lunar surface. Elon thinks that will be the first step into expanding our space horizon and presence before we colonize Mars.
He wants humanity to become a multi-planetary species.
#ElonMusk #Astronaut #ScienceTime
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
https://www.youtube.com/user/spacexchannel
https://www.youtube.com/user/NASAtelevision
https://www.nasa.gov/
https://www.youtube.com/user/virgingalactic
https://www.youtube.com/user/blueoriginchannel
https://www.youtube.com/watch?v=0amrcBE0Jgs&ab_channel=NASAVideo
https://www.youtube.com/watch?v=KGMn0IVK-Z0&ab_channel=SpaceVideos
https://www.youtube.com/watch?v=ZmEg95wPiVU&t=2783s&ab_channel=ISSNationalLab….
Elon Musk hired Hollywood costume designer Jose Fernandez to design a spacesuit for SpaceX. The design was then handed over to spacesuit engineers currently working in the field to transform it into an actual functional spacesuit.
A major goal of the private space industry is to make space travel accessible, affordable, and safe. But it’s not just space tourism that will become a reality in the coming decades. NASA and its private space industry partners will also enable the creation of permanent human settlements in space.
Elon Musk announced that he wants the NEXT GEN spacesuit of the astronaut of the future to not only serve technical purposes but in his words to also look cool.
NASA developed a new spacesuit that will be worn on Artemis missions. It is called the Exploration Extravehicular Mobility Unit, or xEMU.
The 21st century upgrades for the suit that the next moonwalkers will wear will utilize a variety of technological innovations in order to provide a balance between being comfortable, protective, lightweight and flexible. The use of nanotechnology can aid the development of next generation spacesuits because it allows for a unique combination of specialized materials to be used that are tailored specifically for the astronaut's needs and are highly functional.
NASA will continue to push the limits by exploring new frontiers and inviting private sector innovation in the process. They will lead an innovative and sustainable program of exploration with commercial and international partners to send humans farther into space and bring them back home safely.
In order to achieve that, NASA is upgrading all the launch facilities at Kennedy Space Center in Florida that will support Artemis missions to the Moon and beyond. Its newest super heavy lift rocket is called the Space Launch System or SLS.
The Orion spacecraft will carry crew to lunar orbit where they will transfer to a human landing system or the Lunar Gateway.
NASA picked SpaceX to move forward with their Starship HLS design for a crewed demonstration to the surface of the Moon.
Elon Musk was delighted that NASA picked his company for the trip to the moon. Elon said that it has been almost half of a century since we've been to the moon and its about time that we go back there and perhaps even establish a long term base on the lunar surface. Elon thinks that will be the first step into expanding our space horizon and presence before we colonize Mars.
He wants humanity to become a multi-planetary species.
#ElonMusk #Astronaut #ScienceTime
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
https://www.youtube.com/user/spacexchannel
https://www.youtube.com/user/NASAtelevision
https://www.nasa.gov/
https://www.youtube.com/user/virgingalactic
https://www.youtube.com/user/blueoriginchannel
https://www.youtube.com/watch?v=0amrcBE0Jgs&ab_channel=NASAVideo
https://www.youtube.com/watch?v=KGMn0IVK-Z0&ab_channel=SpaceVideos
https://www.youtube.com/watch?v=ZmEg95wPiVU&t=2783s&ab_channel=ISSNationalLab….
active
The Mysterious Force of Gravity Explained by Neil deGrasse Tyson
Of the 4 fundamental forces of nature, gravity is the most intuitive [...]
Of the 4 fundamental forces of nature, gravity is the most intuitive one. We experience gravity every second of our lives so it makes sense that our brains are evolutionarily equipped to intuitively grasp the effects of gravity. At least here on Earth.
Neil deGrasse Tyson explains what gravity is and how this mysterious force works and effects the fabric of space time. And why it effects the very nature of the universe itself. And if the question "Why" is even a good scientific question.
Neil deGrasse Tyson mentions that scientifically speaking, we pretty much understand how gravity works and that is good enough to make scientific progress and questions like why does gravity work belong to set of philosophical questions that are not necessarily useful.
So what is gravity exactly?
Gravity is a natural phenomenon by which all things with mass or energy including planets, stars, galaxies, and even light gravitate toward one another.
Modern work on gravitational theory began with the work of Galileo Galilei in the late 16th and early 17th centuries. In his famous experiment dropping balls from the Tower of Pisa, and later with careful measurements of balls rolling down inclines, Galileo showed that gravitational acceleration is the same for all objects. This contradicted Aristotle's belief that heavier objects have a higher gravitational acceleration. Galileo postulated air resistance as the reason that objects with low density and a high surface area fall more slowly in an atmosphere. Galileo's work set the stage for the formulation of Newton's theory of gravity.
In 1687, Sir Isaac Newton published Principia, which hypothesizes the inverse-square law of universal gravitation. Newton's theory enjoyed its greatest success when it was used to predict the existence of Neptune based on motions of Uranus that could not be accounted for by the actions of the other planets.
However a discrepancy in Mercury's orbit pointed out flaws in Newton's theory.
The issue was resolved in 1915 by Albert Einstein's new theory of general relativity, which accounted for the small discrepancy in Mercury's orbit.
In general relativity, gravity is described by the geometry of spacetime and the laws of physics. According to general relativity, gravity is not a force but instead is caused by the curvature of space–time caused by matter.
Neil deGrasse Tyson give everyday examples to better understand how gravity works meaning how the very fabric of spacetime is curved by matter. In a nutshell: Space tells matter how to move and matter tells space how to curve.
#gravity #neiltyson #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
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Sources Neil deGrasse Tyson at JRE:: https://www.youtube.com/watch?v=0pmviUS1Zac&t=0s
https://en.wikipedia.org/wiki/Gravity#Newton's_theory_of_gravitation
"Dr. Neil deGrasse Tyson Visits JWST and NASA Goddard" by James Webb Space Telescope is licensed under CC BY 2.0….
Neil deGrasse Tyson explains what gravity is and how this mysterious force works and effects the fabric of space time. And why it effects the very nature of the universe itself. And if the question "Why" is even a good scientific question.
Neil deGrasse Tyson mentions that scientifically speaking, we pretty much understand how gravity works and that is good enough to make scientific progress and questions like why does gravity work belong to set of philosophical questions that are not necessarily useful.
So what is gravity exactly?
Gravity is a natural phenomenon by which all things with mass or energy including planets, stars, galaxies, and even light gravitate toward one another.
Modern work on gravitational theory began with the work of Galileo Galilei in the late 16th and early 17th centuries. In his famous experiment dropping balls from the Tower of Pisa, and later with careful measurements of balls rolling down inclines, Galileo showed that gravitational acceleration is the same for all objects. This contradicted Aristotle's belief that heavier objects have a higher gravitational acceleration. Galileo postulated air resistance as the reason that objects with low density and a high surface area fall more slowly in an atmosphere. Galileo's work set the stage for the formulation of Newton's theory of gravity.
In 1687, Sir Isaac Newton published Principia, which hypothesizes the inverse-square law of universal gravitation. Newton's theory enjoyed its greatest success when it was used to predict the existence of Neptune based on motions of Uranus that could not be accounted for by the actions of the other planets.
However a discrepancy in Mercury's orbit pointed out flaws in Newton's theory.
The issue was resolved in 1915 by Albert Einstein's new theory of general relativity, which accounted for the small discrepancy in Mercury's orbit.
In general relativity, gravity is described by the geometry of spacetime and the laws of physics. According to general relativity, gravity is not a force but instead is caused by the curvature of space–time caused by matter.
Neil deGrasse Tyson give everyday examples to better understand how gravity works meaning how the very fabric of spacetime is curved by matter. In a nutshell: Space tells matter how to move and matter tells space how to curve.
#gravity #neiltyson #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources Neil deGrasse Tyson at JRE:: https://www.youtube.com/watch?v=0pmviUS1Zac&t=0s
https://en.wikipedia.org/wiki/Gravity#Newton's_theory_of_gravitation
"Dr. Neil deGrasse Tyson Visits JWST and NASA Goddard" by James Webb Space Telescope is licensed under CC BY 2.0….
active
Can We Live up to be 200 Years Old? The Science of Longevity With David Sinclair
Aging is a natural process of all living organisms. In humans, it [...]
Aging is a natural process of all living organisms. In humans, it represents the accumulation of physical, psychological, and social changes that are thought of as an inevitable process of health decline. Aging doesn’t have to be that way. Recent publications have argued that the rate at which this decline occurs can be slowed or even reversed.
A growing number of scientists now believe that the first person to reach the age of 200 has already been born.
The idea of anyone living to that age is considered a fantasy by most people. Doing so in good health even more so. By slowing the aging process in human beings, we would also slow the natural decline associated with senescence and thereby extend into old age the health and functional capacity that is normally associated with youth.
David Sinclair is a professor of genetics and co-Director of the Paul F. Glenn Center for the Biology of Aging at Harvard Medical School. His work is trying to understand what causes aging and why we age.
Research done by Sinclair and many others have shown that the level of NAD+ declines with age.
They argue that the pace of aging is not inexorable or predetermined, but rather can be slowed and even reversed by a variety of approaches.
According to Sinclair, Sirtuins a family of seven proteins that affect the aging process, and are believed to do a lot of good things in our body are turned on by hormesis.
As part of the aging process, cells produce what is known as oxidants or free radicals which are toxic to cells and which can damage DNA and contribute to the aging process. Researchers in the field think that sirtuins can help prevent this kind of toxicity by speeding up the reaction by which harmful oxidants are neutralized in the body.
#NMN #DavidSinclair #Longevity
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources
The Sincliar Lab - BLAVATNIK INSTITUTE GENETICS https://sinclair.hms.harvard.edu/research Retrieved 21.04.2021
Nicotinamide Riboside—The Current State of Research and Therapeutic Uses https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7352172/ Retrieved 10.05.2021
Is old age the newest disease? The Dr. Gundry Podcast https://youtu.be/S9bIGavmyTI….
A growing number of scientists now believe that the first person to reach the age of 200 has already been born.
The idea of anyone living to that age is considered a fantasy by most people. Doing so in good health even more so. By slowing the aging process in human beings, we would also slow the natural decline associated with senescence and thereby extend into old age the health and functional capacity that is normally associated with youth.
David Sinclair is a professor of genetics and co-Director of the Paul F. Glenn Center for the Biology of Aging at Harvard Medical School. His work is trying to understand what causes aging and why we age.
Research done by Sinclair and many others have shown that the level of NAD+ declines with age.
They argue that the pace of aging is not inexorable or predetermined, but rather can be slowed and even reversed by a variety of approaches.
According to Sinclair, Sirtuins a family of seven proteins that affect the aging process, and are believed to do a lot of good things in our body are turned on by hormesis.
As part of the aging process, cells produce what is known as oxidants or free radicals which are toxic to cells and which can damage DNA and contribute to the aging process. Researchers in the field think that sirtuins can help prevent this kind of toxicity by speeding up the reaction by which harmful oxidants are neutralized in the body.
#NMN #DavidSinclair #Longevity
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Sources
The Sincliar Lab - BLAVATNIK INSTITUTE GENETICS https://sinclair.hms.harvard.edu/research Retrieved 21.04.2021
Nicotinamide Riboside—The Current State of Research and Therapeutic Uses https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7352172/ Retrieved 10.05.2021
Is old age the newest disease? The Dr. Gundry Podcast https://youtu.be/S9bIGavmyTI….
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Artificial Superintelligence, AI in a Box & Machine Consciousness With Nick Bostrom
Artificial Superintelligence or short, ASI, also known as digital [...]
Artificial Superintelligence or short, ASI, also known as digital superintelligence is the advent of a hypothetical agent that possesses intelligence far surpassing that of the smartest and most gifted human minds.
If we as a species manage not to destroy ourselves up until the advent of true artificial general intelligence, the moment of the next phase for our survival in a post AGI world, will be even more paramount.
The consensus among AI experts is that the time it takes to go from AGI or artificial general intelligence to ASI or artificial superintelligence, is exceptionally shorter than the time it takes to achieve AGI from current narrow artificial intelligence systems.
So we really have only one try to make it right.
Philosopher Nick Bostrom has expressed concern about the advent of ASI. He thinks artificial superintelligence may pose the biggest existential threat to humanity.
Besides Nick Bostrom, other well known public thinkers that are concerned about ASI include Elon Musk.
One of the biggest concerns of superintelligence theorists is the singularity hypothesis, which posits that superhuman AI will be created within a short time after the first intelligence explosion. A singularity heralds an abrupt transition in intelligence beyond human levels, leading to superintelligence. If such an entity comes into existence, it would then have immediate access to vastly greater computational resources than humans and may use them for either benign purposes or malevolent ones.
One of the solutions to this risk is the implementation of a precautionary principle, possibly in conjunction with regulation to ensure machine ethics are aligned with our own.
The other side of the coin of the concept of machine ethics is how WE will treat artificial intelligence systems.
Whether we will care about the quote on quote well-being of machines is tied down to the concept of Artificial consciousness or machine consciousness and whether if we will be convinced that they have a subjective experience.
If the current trend of technological growth continues, one day, we will inevitably pave the way for the advent of artificial super-intelligence. Whether it will become conscious or not.
#AI #ASI #AGI
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Sources:
https://www.youtube.com/watch?v=TGdDgMNrkI0
https://www.youtube.com/watch?v=pywF6ZzsghI&t=0s
https://en.wikipedia.org/wiki/Superintelligence….
If we as a species manage not to destroy ourselves up until the advent of true artificial general intelligence, the moment of the next phase for our survival in a post AGI world, will be even more paramount.
The consensus among AI experts is that the time it takes to go from AGI or artificial general intelligence to ASI or artificial superintelligence, is exceptionally shorter than the time it takes to achieve AGI from current narrow artificial intelligence systems.
So we really have only one try to make it right.
Philosopher Nick Bostrom has expressed concern about the advent of ASI. He thinks artificial superintelligence may pose the biggest existential threat to humanity.
Besides Nick Bostrom, other well known public thinkers that are concerned about ASI include Elon Musk.
One of the biggest concerns of superintelligence theorists is the singularity hypothesis, which posits that superhuman AI will be created within a short time after the first intelligence explosion. A singularity heralds an abrupt transition in intelligence beyond human levels, leading to superintelligence. If such an entity comes into existence, it would then have immediate access to vastly greater computational resources than humans and may use them for either benign purposes or malevolent ones.
One of the solutions to this risk is the implementation of a precautionary principle, possibly in conjunction with regulation to ensure machine ethics are aligned with our own.
The other side of the coin of the concept of machine ethics is how WE will treat artificial intelligence systems.
Whether we will care about the quote on quote well-being of machines is tied down to the concept of Artificial consciousness or machine consciousness and whether if we will be convinced that they have a subjective experience.
If the current trend of technological growth continues, one day, we will inevitably pave the way for the advent of artificial super-intelligence. Whether it will become conscious or not.
#AI #ASI #AGI
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
https://www.youtube.com/watch?v=TGdDgMNrkI0
https://www.youtube.com/watch?v=pywF6ZzsghI&t=0s
https://en.wikipedia.org/wiki/Superintelligence….
active
Neil deGrasse Tyson: What is Dark Matter? What is Dark Energy?
Neil deGrasse Tyson offers a comprehensive analysis of what dark [...]
Neil deGrasse Tyson offers a comprehensive analysis of what dark matter and dark energy could be. With his usual wits & style he explains all known hypotheses for what the mysterious substance called dark matter might be. Neil deGrasse Tyson, the most well known astrophysicist of our era if not of all time also asks a mind boggling question about the origin of dark matter. He entails how dark matter or more fittingly dark gravity could originate from other universes in the multiverse.
Normal matter consists of the atoms that make up stars, planets, human beings and every other visible object in the Universe. to precisely assess the age of the universe to be 13.77 billion years old and to determine that atoms make up only 4.6 percent of the universe, with the remainder being dark matter and dark energy.
Neil deGrasse Tyson tells the story of the WMAP and how it enriched our understanding of the universe. This mysterious substance called dark matter, makes up the bulk of a galaxy's mass and forms the foundation of our Universe's large-scale structure. Because dark matter does not emit, absorb, or reflect light, its presence is only known through its gravitational pull on visible matter in space.
The universe is far from being fully understood. There are many different theories as to what dark matter and dark energy actually are, but scientists have been searching for these elusive entities for decades. Recently, new methods of detecting these entities have been developed, which could lead to a significant breakthrough in our understanding of the universe.
#neiltyson #darkmatter #science
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Sources:
https://www.youtube.com/watch?v=QcM4CUMGKAs&t=198s&ab_channel=McDonaldInstitute
https://www.youtube.com/watch?v=xRx6f8lv6qc
https://www.youtube.com/watch?v=wp6cnp1kZBY
https://www.nasa.gov/content/goddard/about-nancy-grace-roman-space-telescope
https://www.nasa.gov/audience/forstudents/9-12/features/what-is-dark-matter.html
https://science.nasa.gov/astrophysics/focus-areas/what-is-dark-energy
https://arxiv.org/abs/2104.02068
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.161101
"Dr. Neil deGrasse Tyson Visits NASA Goddard" by NASA Goddard Photo and Video is licensed under CC BY 2.0….
Normal matter consists of the atoms that make up stars, planets, human beings and every other visible object in the Universe. to precisely assess the age of the universe to be 13.77 billion years old and to determine that atoms make up only 4.6 percent of the universe, with the remainder being dark matter and dark energy.
Neil deGrasse Tyson tells the story of the WMAP and how it enriched our understanding of the universe. This mysterious substance called dark matter, makes up the bulk of a galaxy's mass and forms the foundation of our Universe's large-scale structure. Because dark matter does not emit, absorb, or reflect light, its presence is only known through its gravitational pull on visible matter in space.
The universe is far from being fully understood. There are many different theories as to what dark matter and dark energy actually are, but scientists have been searching for these elusive entities for decades. Recently, new methods of detecting these entities have been developed, which could lead to a significant breakthrough in our understanding of the universe.
#neiltyson #darkmatter #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
https://www.youtube.com/watch?v=QcM4CUMGKAs&t=198s&ab_channel=McDonaldInstitute
https://www.youtube.com/watch?v=xRx6f8lv6qc
https://www.youtube.com/watch?v=wp6cnp1kZBY
https://www.nasa.gov/content/goddard/about-nancy-grace-roman-space-telescope
https://www.nasa.gov/audience/forstudents/9-12/features/what-is-dark-matter.html
https://science.nasa.gov/astrophysics/focus-areas/what-is-dark-energy
https://arxiv.org/abs/2104.02068
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.161101
"Dr. Neil deGrasse Tyson Visits NASA Goddard" by NASA Goddard Photo and Video is licensed under CC BY 2.0….
active
The End of The Universe - The Big Freeze, Empty Space & Supernovae With Lawrence Krauss
Lawrence Krauss the American-Canadian theoretical physicist and [...]
Lawrence Krauss the American-Canadian theoretical physicist and cosmologist explains the importance of empty space for our understanding of the laws of physics and it's implications for the ultimate fate of the universe.
Factors that need to be considered in determining the universe's origin and it's ultimate fate include the average motions of galaxies and the amount of dark matter and dark energy that the universe contains.
Lawrence Krauss mentions another strong factor that determines the ultimate fate of the universe which is its overall shape. There is a strong growing consensus among cosmologists that the shape of the universe is flat.
Our current understanding of the nature of the universe and its subsequent evolution largely depends upon the work of perhaps the most popular scientist of all time, Albert Einstein. Lawrence Krauss also mentions the role of Einstein's general relativity theory and how it impacted modern physics in our understanding of spacetime and the cosmos as a whole.
Based on measurements of the rate of expansion and the mass density, data favors a universe that will continue to expand indefinitely, eventually becoming too cold to sustain life, resulting in the "Big Freeze" universe.
The Big Freeze or the Big Chill is a scenario under which continued expansion results in a universe that asymptotically approaches absolute zero temperature.
As existing stars run out of fuel and cease to shine, the universe will slowly and inexorably grow darker. Eventually black holes will dominate the universe, which themselves will disappear over time as they emit Hawking radiation.
The Big Freeze scenario is gaining ground as the most important hypothesis. However, observations are not conclusive, and alternative models for the ultimate fate of the universe are still possible.
To know the ultimate fate of the universe we must also understand the life cycles of stars. Lawrence Krauss also explains how we are made from star dust.
#universe #LKrauss1 #science
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Sources:
https://www.youtube.com/watch?v=EjaGktVQdNg
https://en.wikipedia.org/wiki/Big_Bang#Expansion_of_space
https://en.wikipedia.org/wiki/Ultimate_fate_of_the_universe
"File:Lawrence Krauss 7-14-2012.JPG" by BDEngler is licensed under CC BY-SA 3.0….
Factors that need to be considered in determining the universe's origin and it's ultimate fate include the average motions of galaxies and the amount of dark matter and dark energy that the universe contains.
Lawrence Krauss mentions another strong factor that determines the ultimate fate of the universe which is its overall shape. There is a strong growing consensus among cosmologists that the shape of the universe is flat.
Our current understanding of the nature of the universe and its subsequent evolution largely depends upon the work of perhaps the most popular scientist of all time, Albert Einstein. Lawrence Krauss also mentions the role of Einstein's general relativity theory and how it impacted modern physics in our understanding of spacetime and the cosmos as a whole.
Based on measurements of the rate of expansion and the mass density, data favors a universe that will continue to expand indefinitely, eventually becoming too cold to sustain life, resulting in the "Big Freeze" universe.
The Big Freeze or the Big Chill is a scenario under which continued expansion results in a universe that asymptotically approaches absolute zero temperature.
As existing stars run out of fuel and cease to shine, the universe will slowly and inexorably grow darker. Eventually black holes will dominate the universe, which themselves will disappear over time as they emit Hawking radiation.
The Big Freeze scenario is gaining ground as the most important hypothesis. However, observations are not conclusive, and alternative models for the ultimate fate of the universe are still possible.
To know the ultimate fate of the universe we must also understand the life cycles of stars. Lawrence Krauss also explains how we are made from star dust.
#universe #LKrauss1 #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
https://www.youtube.com/watch?v=EjaGktVQdNg
https://en.wikipedia.org/wiki/Big_Bang#Expansion_of_space
https://en.wikipedia.org/wiki/Ultimate_fate_of_the_universe
"File:Lawrence Krauss 7-14-2012.JPG" by BDEngler is licensed under CC BY-SA 3.0….
active
The 4 Dimensional Space Time With Brian Greene
Brian Greene the American theoretical physicist, mathematician, and [...]
Brian Greene the American theoretical physicist, mathematician, and string theorist explains the bizarre nature of the fabric of space-time which is a conceptual model combining the three dimensions of space with the fourth dimension of time.
The famous physicist Albert Einstein helped develop the idea of Spacetime as part of his theory of relativity. Brian Greene also credits Newton for his vision of the nature of space and time, although much of what Newton thought to be true about Spacetime is now considered to be wrong.
Brian Greene studies string cosmology which could explain why the space around us has three large dimensions.
Albert Einstein revolutionized our understanding of gravity and laid the foundation for the many scientific and technological breakthroughs that came after him.
The stronger the gravity, the more spacetime curves, and the slower time itself proceeds.
Time goes faster the farther away you are from the earth's surface compared to the time on the surface of the earth. This effect is known as "gravitational time dilation".
To describe the gravitational field of a black hole and the physical quantities such as the spacetime curvature which diverge at the center of the black hole, we need a theory that goes beyond general relativity into the quantum mechanics. Such a theory should allow the description to be extended closer to the center and might even allow an understanding of physics at the center of a black hole.
There are many proposed theories that attempt to explain what gravity is. String theory and Loop quantum gravity are the most popular among these theories. Currently, there is still no complete and consistent quantum theory of gravity, and the candidate models still need to overcome major formal and conceptual problems. They also face the common problem that, as yet, there is no way to put quantum gravity predictions to experimental tests, although there is hope for this to change as future data from cosmological observations and particle physics experiments becomes available.
#spacetime #bgreene #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
100 years of general relativity - https://asd.gsfc.nasa.gov/blueshift/index.php/2015/11/25/100-years-of-general-relativity/
What is Spacetime? https://www.nature.com/articles/d41586-018-05095-z
Theoretical Physics: The origin of space and https://www.nature.com/news/theoretical-physics-the-origins-of-space-and-time-1.13613
Newton’s Views on Space, Time, and Motion - https://plato.stanford.edu/entries/newton-stm/
A Conversation with Brian Greene and Gideon Yago https://www.youtube.com/watch?v=h94Rd9AIfwE&ab_channel=ColumbiaAlumni
The Fabric of the Cosmos, Dr. Brian Greene, Columbia University
https://www.youtube.com/watch?v=3ZNTVNeSWKI&ab_channel=LinusPaulingMemorialLectureSeries
"Brian Greene no Fronteiras do Pensamento Porto Alegre 2014" by fronteirasweb is licensed under CC BY-SA 2.0….
The famous physicist Albert Einstein helped develop the idea of Spacetime as part of his theory of relativity. Brian Greene also credits Newton for his vision of the nature of space and time, although much of what Newton thought to be true about Spacetime is now considered to be wrong.
Brian Greene studies string cosmology which could explain why the space around us has three large dimensions.
Albert Einstein revolutionized our understanding of gravity and laid the foundation for the many scientific and technological breakthroughs that came after him.
The stronger the gravity, the more spacetime curves, and the slower time itself proceeds.
Time goes faster the farther away you are from the earth's surface compared to the time on the surface of the earth. This effect is known as "gravitational time dilation".
To describe the gravitational field of a black hole and the physical quantities such as the spacetime curvature which diverge at the center of the black hole, we need a theory that goes beyond general relativity into the quantum mechanics. Such a theory should allow the description to be extended closer to the center and might even allow an understanding of physics at the center of a black hole.
There are many proposed theories that attempt to explain what gravity is. String theory and Loop quantum gravity are the most popular among these theories. Currently, there is still no complete and consistent quantum theory of gravity, and the candidate models still need to overcome major formal and conceptual problems. They also face the common problem that, as yet, there is no way to put quantum gravity predictions to experimental tests, although there is hope for this to change as future data from cosmological observations and particle physics experiments becomes available.
#spacetime #bgreene #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
100 years of general relativity - https://asd.gsfc.nasa.gov/blueshift/index.php/2015/11/25/100-years-of-general-relativity/
What is Spacetime? https://www.nature.com/articles/d41586-018-05095-z
Theoretical Physics: The origin of space and https://www.nature.com/news/theoretical-physics-the-origins-of-space-and-time-1.13613
Newton’s Views on Space, Time, and Motion - https://plato.stanford.edu/entries/newton-stm/
A Conversation with Brian Greene and Gideon Yago https://www.youtube.com/watch?v=h94Rd9AIfwE&ab_channel=ColumbiaAlumni
The Fabric of the Cosmos, Dr. Brian Greene, Columbia University
https://www.youtube.com/watch?v=3ZNTVNeSWKI&ab_channel=LinusPaulingMemorialLectureSeries
"Brian Greene no Fronteiras do Pensamento Porto Alegre 2014" by fronteirasweb is licensed under CC BY-SA 2.0….
active
The Hidden Reality of Quantum Physics With Sean Carroll
Sean Carroll, the American theoretical physicist who specializes in [...]
Sean Carroll, the American theoretical physicist who specializes in quantum mechanics, gravity and cosmology explains the hidden reality of the micro-world.
The fundamental theory in physics which describes the physical properties of nature at the scale of atoms and subatomic particles, is known as quantum mechanics. It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum information science.
Sean Carroll explains to us in simple turns the mysterious properties of quantum physics. He thinks that we should try to understand quantum mechanics even though prominent physicists like Richard Feynman thought no one can understand quantum mechanics.
Quantum mechanics arose gradually from theories to explain observations which could not be reconciled with classical physics, such as Max Planck's solution in 1900 to the black-body radiation problem.
Sean Carroll mentions how predictions of quantum mechanics have been verified experimentally to an extremely high degree of accuracy.
He also explains the wave function collapse of quantum mechanics. Another spooky aspect in quantum mechanics is when quantum systems interact with each other and the result can be the creation of quantum entanglement: their properties become so intertwined that a description of the whole solely in terms of the individual parts is no longer possible.
Contrary to popular belief, entanglement does not allow sending signals faster than light.
Quantum mechanics is perhaps the most successful theory ever formulated. For almost a century, experimenters have subjected it to rigorous tests, none of which called its foundations into question. It is truly one of the major triumphs in modern physics.
#seanmcarroll #QuantumPhysics #ScienceTime
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Sources:
https://en.wikipedia.org/wiki/Quantum_mechanics
https://www.youtube.com/watch?v=F6FR08VylO4….
The fundamental theory in physics which describes the physical properties of nature at the scale of atoms and subatomic particles, is known as quantum mechanics. It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum information science.
Sean Carroll explains to us in simple turns the mysterious properties of quantum physics. He thinks that we should try to understand quantum mechanics even though prominent physicists like Richard Feynman thought no one can understand quantum mechanics.
Quantum mechanics arose gradually from theories to explain observations which could not be reconciled with classical physics, such as Max Planck's solution in 1900 to the black-body radiation problem.
Sean Carroll mentions how predictions of quantum mechanics have been verified experimentally to an extremely high degree of accuracy.
He also explains the wave function collapse of quantum mechanics. Another spooky aspect in quantum mechanics is when quantum systems interact with each other and the result can be the creation of quantum entanglement: their properties become so intertwined that a description of the whole solely in terms of the individual parts is no longer possible.
Contrary to popular belief, entanglement does not allow sending signals faster than light.
Quantum mechanics is perhaps the most successful theory ever formulated. For almost a century, experimenters have subjected it to rigorous tests, none of which called its foundations into question. It is truly one of the major triumphs in modern physics.
#seanmcarroll #QuantumPhysics #ScienceTime
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
https://en.wikipedia.org/wiki/Quantum_mechanics
https://www.youtube.com/watch?v=F6FR08VylO4….
active
Faster Than Light Speed Travel With Neil deGrasse Tyson
Astrophysicist Neil deGrasse Tyson explains the possibility of going [...]
Astrophysicist Neil deGrasse Tyson explains the possibility of going faster than the speed of light. If we look at the Einstein's special relativity theory, the speed of light in vacuum has constant velocity of 186,282 miles per second. If you could travel at this speed, you could go around the Earth 7.5 times in one second.
In 1994, Miguel Alcubierre proposed a method that would take us beyond the speed of light limit. In his mathematical theory, he used two points in space-time to demonstrate the expansion and contraction of space fabric. The idea of Alcubierre's theory was that we could use this space-time warp to make an object travel faster than light.
Neil deGrasse Tyson takes examples from science fiction works like Star Trek to demonstrate and explain how an advanced civilization could be capable of manipulating the fabric of space-time itself in order to travel faster than the speed of light.
Einstein's theory of special relativity states that energy and mass are interchangeable, and speed of light travel is impossible for material objects that, unlike photons, have a non-zero rest mass.
Neil deGrasse Tyson explains how Einstein's theory of general relativity allows for time itself to slow down if you travel at relativistic velocity
Einstein's theory of general relativity mathematically predicts the existence of wormholes, but none have been discovered to date. Even if a wormhole could form, it would most likely be very unstable. Wormholes are still speculative because nobody really knows if you could pass through it. The math suggests that you need some sort of exotic material to pry the throat of the wormhole opening so that it wont collapse in on it self. Even then it is possibly unstable.
#neiltyson #science #lightspeed
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
Jose Luis Blázquez-Salcedo, Christian Knoll, Eugen Radu. Traversable Wormholes in Einstein-Dirac-Maxwell Theory. Physical Review Letters, 2021; 126 (10) DOI: 10.1103/PhysRevLett.126.101102
Erik W. Lentz. 2021. Breaking the warp barrier: hyper-fast solitons in Einstein-Maxwell-plasma theory. Class. Quantum Grav 38: 075015; doi: 10.1088/1361-6382/abe692
Pioneering Interstellar Fligh https://tauzero.aero/ Accessed 09.04.2021
Warp Drive and Aliens: Bryan Gaensler Public Lecture at Perimeter Institute on February 5, 2020- https://youtu.be/fzweIEvN8sc
Neil deGrasse Tyson Lecture at the University of Washington https://youtu.be/wp6cnp1kZBY
Is Warp Drive Real? - https://www.nasa.gov/centers/glenn/technology/warp/warp.html….
In 1994, Miguel Alcubierre proposed a method that would take us beyond the speed of light limit. In his mathematical theory, he used two points in space-time to demonstrate the expansion and contraction of space fabric. The idea of Alcubierre's theory was that we could use this space-time warp to make an object travel faster than light.
Neil deGrasse Tyson takes examples from science fiction works like Star Trek to demonstrate and explain how an advanced civilization could be capable of manipulating the fabric of space-time itself in order to travel faster than the speed of light.
Einstein's theory of special relativity states that energy and mass are interchangeable, and speed of light travel is impossible for material objects that, unlike photons, have a non-zero rest mass.
Neil deGrasse Tyson explains how Einstein's theory of general relativity allows for time itself to slow down if you travel at relativistic velocity
Einstein's theory of general relativity mathematically predicts the existence of wormholes, but none have been discovered to date. Even if a wormhole could form, it would most likely be very unstable. Wormholes are still speculative because nobody really knows if you could pass through it. The math suggests that you need some sort of exotic material to pry the throat of the wormhole opening so that it wont collapse in on it self. Even then it is possibly unstable.
#neiltyson #science #lightspeed
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
Jose Luis Blázquez-Salcedo, Christian Knoll, Eugen Radu. Traversable Wormholes in Einstein-Dirac-Maxwell Theory. Physical Review Letters, 2021; 126 (10) DOI: 10.1103/PhysRevLett.126.101102
Erik W. Lentz. 2021. Breaking the warp barrier: hyper-fast solitons in Einstein-Maxwell-plasma theory. Class. Quantum Grav 38: 075015; doi: 10.1088/1361-6382/abe692
Pioneering Interstellar Fligh https://tauzero.aero/ Accessed 09.04.2021
Warp Drive and Aliens: Bryan Gaensler Public Lecture at Perimeter Institute on February 5, 2020- https://youtu.be/fzweIEvN8sc
Neil deGrasse Tyson Lecture at the University of Washington https://youtu.be/wp6cnp1kZBY
Is Warp Drive Real? - https://www.nasa.gov/centers/glenn/technology/warp/warp.html….
active
The Kardashev Scale With Michio Kaku: Can We Become a Type 1 Civilization?
Michio Kaku explains the meaning of the Kardashev scale and it's [...]
Michio Kaku explains the meaning of the Kardashev scale and it's importance in our society. Michio Kaku thinks that the possible transition from type 0 to type 1 is probably going to be the biggest transition in human history. He mentions several examples from science fiction work to demonstrate and help us visualize the concepts involved when measuring a civilization's energy output.
As the name implies the Kardashev scale is named after the soviet astronomer Nikolai Kardashev who proposed a scale to measure the level of technological advancement based on the amount of energy the civilization in question is able to use.
A type 1 civilization is a Technological level of a civilization that is close to the level presently on our home planet.
There are however 2 other types of civilizations.
Michio Kaku mentions that a type 2 civilization is able to employ the same techniques as a type 1 civilization but to a large number of planetary systems. He explains that this type of civilization is capable of harnessing the energy radiated by its own star. They may be able to construct space mega-structures to attain their energy needs such as a Dyson sphere.
Star lifting is another process where an advanced civilization could remove a substantial portion of a star's matter in a controlled manner for their energy needs.
But perhaps the most fascinating type of civilization is type 3 which is also called a galactic civilization because they are able to colonize most if not all planets and are able to use the energy released from the stars in their host galaxy.
Michio Kaku explains that currently humanity is at level 0. More precisely we may be at 0.7 We have a long way to go to reach the transition from type 0 to type 1 because we might carry a strong risk of self destruction.
#sciencetime #michiokaku #Kardashevscale
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Sources: https://en.wikipedia.org/wiki/Kardashev_scale
https://www.youtube.com/watch?v=z50vNvaBZ0E….
As the name implies the Kardashev scale is named after the soviet astronomer Nikolai Kardashev who proposed a scale to measure the level of technological advancement based on the amount of energy the civilization in question is able to use.
A type 1 civilization is a Technological level of a civilization that is close to the level presently on our home planet.
There are however 2 other types of civilizations.
Michio Kaku mentions that a type 2 civilization is able to employ the same techniques as a type 1 civilization but to a large number of planetary systems. He explains that this type of civilization is capable of harnessing the energy radiated by its own star. They may be able to construct space mega-structures to attain their energy needs such as a Dyson sphere.
Star lifting is another process where an advanced civilization could remove a substantial portion of a star's matter in a controlled manner for their energy needs.
But perhaps the most fascinating type of civilization is type 3 which is also called a galactic civilization because they are able to colonize most if not all planets and are able to use the energy released from the stars in their host galaxy.
Michio Kaku explains that currently humanity is at level 0. More precisely we may be at 0.7 We have a long way to go to reach the transition from type 0 to type 1 because we might carry a strong risk of self destruction.
#sciencetime #michiokaku #Kardashevscale
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Sources: https://en.wikipedia.org/wiki/Kardashev_scale
https://www.youtube.com/watch?v=z50vNvaBZ0E….
active
Neil deGrasse Tyson: What Drives Scientific Progress?
Neil deGrasse Tyson is an American astrophysicist, planetary [...]
Neil deGrasse Tyson is an American astrophysicist, planetary scientist, author, and science communicator. In this video Neil deGrasse Tyson explains what drives scientific progress. He explains that there are only 3 drivers or motivators that push civilizations to make scientific progress and technological innovation.
Tyson studied at Harvard University, the University of Texas at Austin, and Columbia University. From 1995 to 2005, Tyson wrote monthly essays in the "Universe" column for Natural History magazine, some of which were later published in his books Death by Black Hole and Astrophysics for People in a Hurry.
During the same period, he wrote a monthly column in StarDate magazine, answering questions about the universe under the pen name "Merlin". Material from the column appeared in his books Merlin's Tour of the Universe and Just Visiting This Planet (1998). Tyson served on a 2001 government commission on the future of the U.S. aerospace industry and on the 2004 Moon, Mars and Beyond commission. He was awarded the NASA Distinguished Public Service Medal in the same year.
From 2006 to 2011, he hosted the television show NOVA ScienceNow on PBS. Since 2009, Tyson has hosted the weekly podcast StarTalk. A spin-off, also called StarTalk, began airing on National Geographic in 2015. In 2014, he hosted the television series Cosmos: A Spacetime Odyssey, a successor to Carl Sagan's 1980 series Cosmos: A Personal Voyage.
The U.S. National Academy of Sciences awarded Tyson the Public Welfare Medal in 2015 for his "extraordinary role in exciting the public about the wonders of science.
#neiltyson #sciencetime #science
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Source: https://www.loc.gov/item/webcast-5790….
Tyson studied at Harvard University, the University of Texas at Austin, and Columbia University. From 1995 to 2005, Tyson wrote monthly essays in the "Universe" column for Natural History magazine, some of which were later published in his books Death by Black Hole and Astrophysics for People in a Hurry.
During the same period, he wrote a monthly column in StarDate magazine, answering questions about the universe under the pen name "Merlin". Material from the column appeared in his books Merlin's Tour of the Universe and Just Visiting This Planet (1998). Tyson served on a 2001 government commission on the future of the U.S. aerospace industry and on the 2004 Moon, Mars and Beyond commission. He was awarded the NASA Distinguished Public Service Medal in the same year.
From 2006 to 2011, he hosted the television show NOVA ScienceNow on PBS. Since 2009, Tyson has hosted the weekly podcast StarTalk. A spin-off, also called StarTalk, began airing on National Geographic in 2015. In 2014, he hosted the television series Cosmos: A Spacetime Odyssey, a successor to Carl Sagan's 1980 series Cosmos: A Personal Voyage.
The U.S. National Academy of Sciences awarded Tyson the Public Welfare Medal in 2015 for his "extraordinary role in exciting the public about the wonders of science.
#neiltyson #sciencetime #science
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Source: https://www.loc.gov/item/webcast-5790….
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The Mysteries of String Theory With Brian Greene
The theoretical framework where point like particles in particle [...]
The theoretical framework where point like particles in particle physics are replaced by one dimensional objects called strings is known as string theory.
This theory describes how strings instead of point like particles propagate through space and interact with each other. Strings look just like ordinary particles with mass, charge and other properties that are determined by the vibrational state of the string.
Brian Greene is an American theoretical physicist, mathematician, and string theorist. Greene was a physics professor at Cornell University from 1990-1995, and has been a professor at Columbia University since 1996 and chairman of the World Science Festival since co-founding it in 2008. Brian Greene has worked on mirror symmetry, relating two different Calabi–Yau manifolds. In this video he explains string theory in detail.
One of the many vibrational states of the string corresponds to a quantum mechanical particle that carries gravitational force known as a graviton. Therefore string theory is a quantum gravity theory.
The theory attempts to address a number of broad and deep questions in fundamental physics. There are quite a few contributions of advances to mathematical physics from string theory that come to mind. Including: Black hole physics, early universe cosmology, nuclear physics, condensed matter physics etc.
Physicists have been dreaming about a theory of everything for a long time and because string theory provides a unified description of gravity and particle physics, it is a candidate for a theoretical model that describes all fundamental forces and forms of matter.
String theory was first studied in the late 1960s as a theory of the strong nuclear force, before being abandoned in favor of quantum chromodynamics. However, it was realized that the very properties that made string theory unsuitable as a theory of nuclear physics made it a promising candidate for a quantum theory of gravity.
"Bosonic string theory" is the earliest version of what is today string theory but it incorporated only the class of partciles known as bosons. However the theory later developed into "Superstring theory" where the connection between bosons and the class of particles known as fermions is called "Supersymmetry"
#stringtheory #bgreene #science
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Sources: https://en.wikipedia.org/wiki/String_theory
https://www.youtube.com/watch?v=fJqpNudIss4
https://www.youtube.com/watch?v=kF4ju6j6aLE….
This theory describes how strings instead of point like particles propagate through space and interact with each other. Strings look just like ordinary particles with mass, charge and other properties that are determined by the vibrational state of the string.
Brian Greene is an American theoretical physicist, mathematician, and string theorist. Greene was a physics professor at Cornell University from 1990-1995, and has been a professor at Columbia University since 1996 and chairman of the World Science Festival since co-founding it in 2008. Brian Greene has worked on mirror symmetry, relating two different Calabi–Yau manifolds. In this video he explains string theory in detail.
One of the many vibrational states of the string corresponds to a quantum mechanical particle that carries gravitational force known as a graviton. Therefore string theory is a quantum gravity theory.
The theory attempts to address a number of broad and deep questions in fundamental physics. There are quite a few contributions of advances to mathematical physics from string theory that come to mind. Including: Black hole physics, early universe cosmology, nuclear physics, condensed matter physics etc.
Physicists have been dreaming about a theory of everything for a long time and because string theory provides a unified description of gravity and particle physics, it is a candidate for a theoretical model that describes all fundamental forces and forms of matter.
String theory was first studied in the late 1960s as a theory of the strong nuclear force, before being abandoned in favor of quantum chromodynamics. However, it was realized that the very properties that made string theory unsuitable as a theory of nuclear physics made it a promising candidate for a quantum theory of gravity.
"Bosonic string theory" is the earliest version of what is today string theory but it incorporated only the class of partciles known as bosons. However the theory later developed into "Superstring theory" where the connection between bosons and the class of particles known as fermions is called "Supersymmetry"
#stringtheory #bgreene #science
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Sources: https://en.wikipedia.org/wiki/String_theory
https://www.youtube.com/watch?v=fJqpNudIss4
https://www.youtube.com/watch?v=kF4ju6j6aLE….
active
Neil deGrasse Tyson Explains The Weirdness of Quantum Physics
Quantum mechanics is the area of physics that deals with the behaviour [...]
Quantum mechanics is the area of physics that deals with the behaviour of atoms and particles on microscopic scales. Since its inception, the many counter-intuitive aspects and results of quantum mechanics have provoked strong philosophical debates and many interpretations.
Neil deGrasse Tyson explains quantum physics in a way that is understandable even for the lay person. In Quantum Mechanics there is no such thing as absolute certainty when looking for something. This phenomenon is known as Uncertainty Principle and was Introduced first in 1927 by the German physicist Werner Heisenberg. Heisenberg realized that one implication of quantum physics is that the act of measurement always disturbs the object measured.
Neil deGrasse Tyson explains that the whole computer world is based on the principle of Quantum Physics. We are able to manipulate the electrical properties of silicon only because we can study the wave nature of electrons.
Our daily routines are often governed by technology that is directly related to Quantum Physics, thus our lives rest upon these fundamental scientific discoveries.
Another hard concept to grasp is Quantum entanglement. Einstein referred to it as "spooky action at a distance. It occurs when a pair or group of particles is generated, interact, or share spatial proximity in a way such that the quantum state of each particle of the pair or group cannot be described independently of the state of the others. But Neil deGrasse Tyson and Lawrence Krauss explain this concept with everyday life examples which makes it a little bit easier to understand.
As Neil deGrasse Tyson points out, the first quantum phenomena were observed more than a century ago. However scientists are still learning about this realm of our universe.
#neiltyson #quantumphysics #science
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Sources:
House Science & National Labs Caucus: Neil deGrasse Tyson
https://www.youtube.com/watch?v=joARXZagTuM Accessed 01.03.2021
Lawrence Krauss - Connoway Hall - https://www.youtube.com/watch?v=BRNtcj6YRuc Accessed 12.03.2021
In the Blink of Bird’s Eye, a Model for Quantum Navigation
https://www.ks.uiuc.edu/Publications/pdfs/2011-01-27-wired.com-In_the_Blink_of_Birds_Eye_a_Model_for_Quantum_Navigation.pdf retrieved 10.03.2021
Satellite-to-ground quantum-limited communication using a 50-kg-class microsatellite
https://www.nature.com/articles/nphoton.2017.107 Accessed 11.03.2021
NASA's Cold Atom Lab Takes One Giant Leap for Quantum Science
https://www.nasa.gov/feature/jpl/nasas-cold-atom-lab-takes-one-giant-leap-for-quantum-science/ Accessed 09.03.2021
NASA’s Cold Atom Lab: The Coolest Experiment in the Universe
https://coldatomlab.jpl.nasa.gov/videos/coolest-experiment/ Accessed 02.03.2021
Why do quantum effects only happen on the atomic scale?
https://wtamu.edu/~cbaird/sq/2014/04/22/why-do-quantum-effects-only-happen-on-the-atomic-scale/ retrieved 01.03.2021
Neil deGrasse Tyson JRE #919
https://www.youtube.com/watch?v=PhHtBqsGAoA retrieved 26.02.2017….
Neil deGrasse Tyson explains quantum physics in a way that is understandable even for the lay person. In Quantum Mechanics there is no such thing as absolute certainty when looking for something. This phenomenon is known as Uncertainty Principle and was Introduced first in 1927 by the German physicist Werner Heisenberg. Heisenberg realized that one implication of quantum physics is that the act of measurement always disturbs the object measured.
Neil deGrasse Tyson explains that the whole computer world is based on the principle of Quantum Physics. We are able to manipulate the electrical properties of silicon only because we can study the wave nature of electrons.
Our daily routines are often governed by technology that is directly related to Quantum Physics, thus our lives rest upon these fundamental scientific discoveries.
Another hard concept to grasp is Quantum entanglement. Einstein referred to it as "spooky action at a distance. It occurs when a pair or group of particles is generated, interact, or share spatial proximity in a way such that the quantum state of each particle of the pair or group cannot be described independently of the state of the others. But Neil deGrasse Tyson and Lawrence Krauss explain this concept with everyday life examples which makes it a little bit easier to understand.
As Neil deGrasse Tyson points out, the first quantum phenomena were observed more than a century ago. However scientists are still learning about this realm of our universe.
#neiltyson #quantumphysics #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
House Science & National Labs Caucus: Neil deGrasse Tyson
https://www.youtube.com/watch?v=joARXZagTuM Accessed 01.03.2021
Lawrence Krauss - Connoway Hall - https://www.youtube.com/watch?v=BRNtcj6YRuc Accessed 12.03.2021
In the Blink of Bird’s Eye, a Model for Quantum Navigation
https://www.ks.uiuc.edu/Publications/pdfs/2011-01-27-wired.com-In_the_Blink_of_Birds_Eye_a_Model_for_Quantum_Navigation.pdf retrieved 10.03.2021
Satellite-to-ground quantum-limited communication using a 50-kg-class microsatellite
https://www.nature.com/articles/nphoton.2017.107 Accessed 11.03.2021
NASA's Cold Atom Lab Takes One Giant Leap for Quantum Science
https://www.nasa.gov/feature/jpl/nasas-cold-atom-lab-takes-one-giant-leap-for-quantum-science/ Accessed 09.03.2021
NASA’s Cold Atom Lab: The Coolest Experiment in the Universe
https://coldatomlab.jpl.nasa.gov/videos/coolest-experiment/ Accessed 02.03.2021
Why do quantum effects only happen on the atomic scale?
https://wtamu.edu/~cbaird/sq/2014/04/22/why-do-quantum-effects-only-happen-on-the-atomic-scale/ retrieved 01.03.2021
Neil deGrasse Tyson JRE #919
https://www.youtube.com/watch?v=PhHtBqsGAoA retrieved 26.02.2017….
active
The Solar System Presented by Science Time
The Solar System is the gravitationally bound system of the Sun and [...]
The Solar System is the gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly. Of the objects that orbit the Sun directly, the largest are the eight planets, with the remainder being smaller objects, the dwarf planets and small Solar System bodies.
But how did it all begin? How did the Solar System form that eventually spawned life which contemplates it's own existence?
The Solar System formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud.
About 4.5 billion years ago, a giant, rotating cloud of gas and dust called a solar nebula collapsed because of its overwhelming gravity. The nebula started spinning faster and faster and it flattened into a disk pulling most of the material towards it's center, forming what we now call...The Sun
Our fascination with space is endless and as old as our species began to think and wonder about the mysteries of the natural world.
Astronomy in Greek literally means the science that studies the laws of the stars. It's a natural science that studies celestial objects and phenomena, using mathematics, physics, and chemistry in order to explain their origin and evolution.
In this video, we will take a virtual space tour of the solar system, find out how the Sun was formed, visit the terrestrial planets, the Asteroid belt, the Gas Giants, the Ice Giants, visit Pluto & Plutinos and the Oort cloud, unveiling the mysteries that make up, our Solar System.
#SolarSystem #ScienceTime #Space
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Sources: https://solarsystem.nasa.gov/
https://en.wikipedia.org/wiki/Solar_System
https://www.nasa.gov/image-feature/perseverance-snaps-its-first-full-color-image-of-mars
Some video footage is used under license from SpaceEngine….
But how did it all begin? How did the Solar System form that eventually spawned life which contemplates it's own existence?
The Solar System formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud.
About 4.5 billion years ago, a giant, rotating cloud of gas and dust called a solar nebula collapsed because of its overwhelming gravity. The nebula started spinning faster and faster and it flattened into a disk pulling most of the material towards it's center, forming what we now call...The Sun
Our fascination with space is endless and as old as our species began to think and wonder about the mysteries of the natural world.
Astronomy in Greek literally means the science that studies the laws of the stars. It's a natural science that studies celestial objects and phenomena, using mathematics, physics, and chemistry in order to explain their origin and evolution.
In this video, we will take a virtual space tour of the solar system, find out how the Sun was formed, visit the terrestrial planets, the Asteroid belt, the Gas Giants, the Ice Giants, visit Pluto & Plutinos and the Oort cloud, unveiling the mysteries that make up, our Solar System.
#SolarSystem #ScienceTime #Space
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources: https://solarsystem.nasa.gov/
https://en.wikipedia.org/wiki/Solar_System
https://www.nasa.gov/image-feature/perseverance-snaps-its-first-full-color-image-of-mars
Some video footage is used under license from SpaceEngine….
active
The Multiverse Hypothesis Explained by Max Tegmark
The multiverse hypothesis has attracted attention over the last few [...]
The multiverse hypothesis has attracted attention over the last few years but in actuality it's a very old idea going back to the ancient Greeks where they imagined the concept of infinite worlds. However the multiverse hypothesis has been under scrutiny only in the time of modern physics.
Dr. Max Tegmark is a Swedish-American Physicist, Cosmologist, & Professor at MIT. He explains in detail the multiverse hypothesis. According to Max Tegmark, the multiverse is not just a staple of science fiction. He argues that there are at least 4 different kinds of parallel universes lurking out there. Together, these universes comprise everything that exists: the entirety of space, time, matter, energy, information, and the physical laws and constants that describe them. They are arranged such that subsequent levels can be understood to encompass and expand upon previous levels.
A common feature of all four multiverse levels is that the simplest and arguably most elegant theory involves parallel universes by default.
Prominent physicists are divided about whether any other universes exist outside of our own.
Some of them think that the multiverse theory could at least be rendered more plausible, by the existence of dark energy in our universe.
However, others argue that the multiverse is a philosophical notion rather than a scientific hypothesis because it cannot be empirically falsified.
If our universe were merely one of infinitely many, there would be no way to confirm that any of the others are distinct rather than part of an infinite multiverse. In other words, no external observer could ever determine whether his universe was special in the sense that it is exempted from sharing its characteristics with other universes.
#multiverse #tegmark #science
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Sources
Our Mathematical Universe: My Quest for the Ultimate Nature of Reality (2014) ISBN 978-0307599803
Tegmark, Max (May 2003). "Parallel Universes". Scientific American. Vol. 288. pp. 40–51. arXiv:astro-ph/0302131 - Retieved 26.February 2021
Tegmark, Max (23 January 2003). Parallel Universes (PDF). Retrieved 25 February 2021
Simulation #256 Dr. Max Tegmark - Math, Physics, & AGI https://www.youtube.com/watch?v=BBYkS4eXkAY
https://space.mit.edu/home/tegmark
https://futureoflife.org….
Dr. Max Tegmark is a Swedish-American Physicist, Cosmologist, & Professor at MIT. He explains in detail the multiverse hypothesis. According to Max Tegmark, the multiverse is not just a staple of science fiction. He argues that there are at least 4 different kinds of parallel universes lurking out there. Together, these universes comprise everything that exists: the entirety of space, time, matter, energy, information, and the physical laws and constants that describe them. They are arranged such that subsequent levels can be understood to encompass and expand upon previous levels.
A common feature of all four multiverse levels is that the simplest and arguably most elegant theory involves parallel universes by default.
Prominent physicists are divided about whether any other universes exist outside of our own.
Some of them think that the multiverse theory could at least be rendered more plausible, by the existence of dark energy in our universe.
However, others argue that the multiverse is a philosophical notion rather than a scientific hypothesis because it cannot be empirically falsified.
If our universe were merely one of infinitely many, there would be no way to confirm that any of the others are distinct rather than part of an infinite multiverse. In other words, no external observer could ever determine whether his universe was special in the sense that it is exempted from sharing its characteristics with other universes.
#multiverse #tegmark #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources
Our Mathematical Universe: My Quest for the Ultimate Nature of Reality (2014) ISBN 978-0307599803
Tegmark, Max (May 2003). "Parallel Universes". Scientific American. Vol. 288. pp. 40–51. arXiv:astro-ph/0302131 - Retieved 26.February 2021
Tegmark, Max (23 January 2003). Parallel Universes (PDF). Retrieved 25 February 2021
Simulation #256 Dr. Max Tegmark - Math, Physics, & AGI https://www.youtube.com/watch?v=BBYkS4eXkAY
https://space.mit.edu/home/tegmark
https://futureoflife.org….
active
Is Superintelligent AI an Existential Risk? - Nick Bostrom on ASI
Artificial superintelligence or a superintelligence in general is a [...]
Artificial superintelligence or a superintelligence in general is a hypothetical agent that possesses intelligence far surpassing that of the brightest and most gifted human minds.
According to the most popular version of the singularity hypothesis, called intelligence explosion, an upgradable intelligent agent will eventually enter a "runaway reaction" of self-improvement cycles, each new and more intelligent generation appearing more and more rapidly, causing an "explosion" in intelligence and resulting in a powerful superintelligence that qualitatively far surpasses all human intelligence.
I. J. Good's "intelligence explosion" model predicts that a future superintelligence will trigger a singularity.
Four polls of AI researchers, conducted in 2012 and 2013 by Nick Bostrom and Vincent C. Müller, suggested a median probability estimate of 50% that artificial general intelligence or AGI would be developed by 2040 to 2050.
Public figures such as Stephen Hawking and Elon Musk have expressed concern that full artificial intelligence or strong AI could result in human extinction. But the consequences of the singularity and its potential benefit or harm to the human race have been intensely debated.
Philosopher Nick Bostrom defines an existential risk as one in which an extinction-level event is not only possible but likely. He argues that advanced artificial intelligence is "likely" to be an existential risk.
In addition, time frame is also a factor, as a superintelligence might decide to act quickly before humans would have a chance to react with any countervailing action. A superintelligence might decide to preemptively eliminate all of humanity for reasons that may be incomprehensible to us.
There is also a possibility where a superintelligence might seek to colonize the universe. A superintelligence might do this in order to maximize the amount of computation it could do or to obtain raw materials for manufacturing new supercomputers.
While it may seem alarmist to worry about these scenarios in a current world where only narrow AI exists, we do not know how long it takes or if it's even possible to develop safe artificial super-intelligence that shares our goals. Thus, we better start planning today about the advent of ASI... While we still can!
#AI #ASI #AGI
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SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
Nick Bostrom talks at Google: https://www.youtube.com/watch?v=pywF6ZzsghI&t=0s
https://en.wikipedia.org/wiki/Superintelligence….
According to the most popular version of the singularity hypothesis, called intelligence explosion, an upgradable intelligent agent will eventually enter a "runaway reaction" of self-improvement cycles, each new and more intelligent generation appearing more and more rapidly, causing an "explosion" in intelligence and resulting in a powerful superintelligence that qualitatively far surpasses all human intelligence.
I. J. Good's "intelligence explosion" model predicts that a future superintelligence will trigger a singularity.
Four polls of AI researchers, conducted in 2012 and 2013 by Nick Bostrom and Vincent C. Müller, suggested a median probability estimate of 50% that artificial general intelligence or AGI would be developed by 2040 to 2050.
Public figures such as Stephen Hawking and Elon Musk have expressed concern that full artificial intelligence or strong AI could result in human extinction. But the consequences of the singularity and its potential benefit or harm to the human race have been intensely debated.
Philosopher Nick Bostrom defines an existential risk as one in which an extinction-level event is not only possible but likely. He argues that advanced artificial intelligence is "likely" to be an existential risk.
In addition, time frame is also a factor, as a superintelligence might decide to act quickly before humans would have a chance to react with any countervailing action. A superintelligence might decide to preemptively eliminate all of humanity for reasons that may be incomprehensible to us.
There is also a possibility where a superintelligence might seek to colonize the universe. A superintelligence might do this in order to maximize the amount of computation it could do or to obtain raw materials for manufacturing new supercomputers.
While it may seem alarmist to worry about these scenarios in a current world where only narrow AI exists, we do not know how long it takes or if it's even possible to develop safe artificial super-intelligence that shares our goals. Thus, we better start planning today about the advent of ASI... While we still can!
#AI #ASI #AGI
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
Nick Bostrom talks at Google: https://www.youtube.com/watch?v=pywF6ZzsghI&t=0s
https://en.wikipedia.org/wiki/Superintelligence….
active
An Extinction Level Asteroid Impact With Neil deGrasse Tyson
An extinction level event from an asteroid impact is among the most [...]
An extinction level event from an asteroid impact is among the most common cause of extinction for many species in the history of life on Earth. Neil deGrasse Tyson explains in detail the possibility of an asteroid impact from the asteroid named Apophis after the ancient Egyptian deity who embodied chaos, its estimated diameter is between 1,115 and 1,214 feet. Additional observations cleared up the concern of a direct impact. Apophis is expected to pass close to Earth in 2029, 2036 and again in 2068.
Neil deGrasse Tyson explains the details if Apophis were to hit near the coastline of North America.
Asteroids are rocky fragments left over from the formation of the solar system about 4.6 billion years ago. Most of the asteroids orbit between Jupiter and Mars, where the Jupiter's gravity prevents them from ever combining into a larger body.
There are, however, asteroids and comets that have been nudged by the gravitational attraction of nearby planets into orbits that allow them to enter the Earth's neighbourhood. These are called Near Earth objects or NEOs.
NEOs are not yet well understood; they have only been tracked for a few years, and their orbits are usually very uncertain. It is difficult to predict how close an object will come to Earth, or where it will hit.
An asteroid impact on Earth could have catastrophic consequences depending on the composition of the asteroid and the location of impact. An asteroid is likely to make a crater upon impact with Earth, causing massive destruction within a radius of hundreds of miles. This crater is likely to be hazardous for some time following the impact. Moreover, a major asteroid collision could cause general disruption to climate and weather systems on Earth.
At the end of the Cretaceous Period, 65 million years ago, an asteroid hit Earth in the Yucatan Peninsula, Mexico, forming what is today called the Chicxulub impact crater. This impact caused a mass extinction in which 75% of plant and animal species on Earth became extinct, including all non-avian dinosaurs.
According to Neal DeGrasse Tyson, "If an asteroid is found to be on a collision course with Earth, instead of trying to blow it up, the main goal would be to nudge it out of its path, avoiding an unpleasant end to civilization."
#asteroid #neiltyson #science
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Source: https://www.youtube.com/watch?v=wp6cnp1kZBY
https://earthsky.org/space/asteroid-99942-apophis-encounters-2029-2036-2068
https://spaceguardcentre.com/tunguska-explosion-in-1908-caused-by-asteroid-grazing-earth/….
Neil deGrasse Tyson explains the details if Apophis were to hit near the coastline of North America.
Asteroids are rocky fragments left over from the formation of the solar system about 4.6 billion years ago. Most of the asteroids orbit between Jupiter and Mars, where the Jupiter's gravity prevents them from ever combining into a larger body.
There are, however, asteroids and comets that have been nudged by the gravitational attraction of nearby planets into orbits that allow them to enter the Earth's neighbourhood. These are called Near Earth objects or NEOs.
NEOs are not yet well understood; they have only been tracked for a few years, and their orbits are usually very uncertain. It is difficult to predict how close an object will come to Earth, or where it will hit.
An asteroid impact on Earth could have catastrophic consequences depending on the composition of the asteroid and the location of impact. An asteroid is likely to make a crater upon impact with Earth, causing massive destruction within a radius of hundreds of miles. This crater is likely to be hazardous for some time following the impact. Moreover, a major asteroid collision could cause general disruption to climate and weather systems on Earth.
At the end of the Cretaceous Period, 65 million years ago, an asteroid hit Earth in the Yucatan Peninsula, Mexico, forming what is today called the Chicxulub impact crater. This impact caused a mass extinction in which 75% of plant and animal species on Earth became extinct, including all non-avian dinosaurs.
According to Neal DeGrasse Tyson, "If an asteroid is found to be on a collision course with Earth, instead of trying to blow it up, the main goal would be to nudge it out of its path, avoiding an unpleasant end to civilization."
#asteroid #neiltyson #science
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Source: https://www.youtube.com/watch?v=wp6cnp1kZBY
https://earthsky.org/space/asteroid-99942-apophis-encounters-2029-2036-2068
https://spaceguardcentre.com/tunguska-explosion-in-1908-caused-by-asteroid-grazing-earth/….
active
Elon Musk Wants Mars's Population to Reach 1,000,000 by 2050
Elon Musk said he wants to put a million people on Mars by 2050. the [...]
Elon Musk said he wants to put a million people on Mars by 2050. the CEO of SpaceX has made headlines over the recent months because he explained his super ambitious plan to colonize the red planet and send a million people there.
Mars is a cold, unforgiving red desert. The Romans called it, the god of war. Because it has a thin almost airless atmosphere, and because of the iron oxide chemicals in its soil, giving it a reddish hue, the fourth rock from the sun, has often been called...Red & Dead. But future generations could someday call this red wasteland home, according to Elon Musk.
The colonization of Mars is not a new idea, but it has been popularized in recent years by famous scientists and thinkers. Among them is Elon Musk, who hopes that we will someday become a multi-planetary species.
Before we dare to dream about such an astonishing world, we will have to face many hard challenges that come along with space travel and perhaps the most daunting task to overcome is going to be the difference between Earth and Mars.
Before we potentially establish a colony on Mars, and since terraforming the red planet cannot be expected as a near-term solution, habitable structures like domes would need to be constructed with pressure vessels similar to spacecraft.
Despite the many challenges that come with space travel let alone the ambition of colonizing and potentially terraforming an entire planet, Elon Musk is determined on the quest for us to become a multi-planetary species and perhaps Mars will have a population of a million people by 2050 if all goes according to plan.
It is fascinating that we're living in a time where these possibilities are no longer just in the realm of science fiction and are serious talk in the scientific community. Perhaps by the end of this decade we will go to Mars and do the other things not because they are easy but because they are hard.
In terms of space travel and exploring our solar system, specifically going to Mars, the 2020's may very well be like the 1960's of the Moon era.
It's an exciting time to be alive.
#ElonMusk #Mars #ScienceTime
Sources:
https://en.wikipedia.org/wiki/Colonization_of_Mars
Elon Musk: Making Humans a Multiplanetary Species:https://www.youtube.com/watch?v=H7Uyfqi_TE8&t=0s
Starship Launch Animation: https://www.youtube.com/watch?v=C8JyvzU0CXU
Starship | SN9 | High-Altitude Flight Test: https://www.youtube.com/watch?v=_zZ7fIkpBgs&t=0s….
Mars is a cold, unforgiving red desert. The Romans called it, the god of war. Because it has a thin almost airless atmosphere, and because of the iron oxide chemicals in its soil, giving it a reddish hue, the fourth rock from the sun, has often been called...Red & Dead. But future generations could someday call this red wasteland home, according to Elon Musk.
The colonization of Mars is not a new idea, but it has been popularized in recent years by famous scientists and thinkers. Among them is Elon Musk, who hopes that we will someday become a multi-planetary species.
Before we dare to dream about such an astonishing world, we will have to face many hard challenges that come along with space travel and perhaps the most daunting task to overcome is going to be the difference between Earth and Mars.
Before we potentially establish a colony on Mars, and since terraforming the red planet cannot be expected as a near-term solution, habitable structures like domes would need to be constructed with pressure vessels similar to spacecraft.
Despite the many challenges that come with space travel let alone the ambition of colonizing and potentially terraforming an entire planet, Elon Musk is determined on the quest for us to become a multi-planetary species and perhaps Mars will have a population of a million people by 2050 if all goes according to plan.
It is fascinating that we're living in a time where these possibilities are no longer just in the realm of science fiction and are serious talk in the scientific community. Perhaps by the end of this decade we will go to Mars and do the other things not because they are easy but because they are hard.
In terms of space travel and exploring our solar system, specifically going to Mars, the 2020's may very well be like the 1960's of the Moon era.
It's an exciting time to be alive.
#ElonMusk #Mars #ScienceTime
Sources:
https://en.wikipedia.org/wiki/Colonization_of_Mars
Elon Musk: Making Humans a Multiplanetary Species:https://www.youtube.com/watch?v=H7Uyfqi_TE8&t=0s
Starship Launch Animation: https://www.youtube.com/watch?v=C8JyvzU0CXU
Starship | SN9 | High-Altitude Flight Test: https://www.youtube.com/watch?v=_zZ7fIkpBgs&t=0s….
active
Could Intelligent Alien Life be AI?
Artificial Intelligence or AI more specifically strong AI or [...]
Artificial Intelligence or AI more specifically strong AI or artificial superintelligence could possibly be the answer or the solution to the Fermi paradox. The Fermi paradox, named after Italian-American physicist Enrico Fermi, is the apparent contradiction between the lack of evidence for extraterrestrial civilizations and various high estimates for their probability of existence.The conundrum for the existence of aliens and more categorically intelligent aliens could be a much simpler solution that we've previously thought. To more broadly answer the question of intelligent aliens, we first have to think about whether it's possible that we are a just a tiny spec in the vastness of space, the only place in the universe where intelligent life found its way to manifest Or maybe there is an abundance of intelligent life out there and we just haven't found it yet.The search for extraterrestrial life is arguably one of the most all-encompassing scientific quest endeavours of our time.How would we know if we had found alien life? It would be interesting to find something that looks like intelligent alien life, but is not actually alive. It could be a space probe. Or a satellite. We often imagine extraterrestrial life as having a face, because we can't figure out what it would look like. But if we were to find intelligent alien life, we might not immediately know what it is. Our guesses till recently were random mixtures of biological forms. An advanced civilization however could also be able to engineer machines or digital living forms with the exact same properties as biological forms.A growing number of scientists believe that the aliens we are looking for are in fact AI. It is quite possible that some civilizations could have transcended biology all together to become artificial superintelligence.
#Aliens #AI #ScienceTime
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Sources:
https://www.youtube.com/watch?v=OJ4X-09OJsI&ab_channel=ANUTV
https://www.youtube.com/watch?v=CAD25s53wmE&t=1250s&ab_channel=StPetersburgCollege
https://www.youtube.com/watch?v=hkxEbIxoNQI&t=79s&ab_channel=BoingBoingVideo
https://iopscience.iop.org/article/10.3847/1538-4357/ab8225….
#Aliens #AI #ScienceTime
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Sources:
https://www.youtube.com/watch?v=OJ4X-09OJsI&ab_channel=ANUTV
https://www.youtube.com/watch?v=CAD25s53wmE&t=1250s&ab_channel=StPetersburgCollege
https://www.youtube.com/watch?v=hkxEbIxoNQI&t=79s&ab_channel=BoingBoingVideo
https://iopscience.iop.org/article/10.3847/1538-4357/ab8225….
active
The Multiverse Hypothesis Explained by Brian Greene
The multiverse hypothesis and the concept of multiple universes [...]
The multiverse hypothesis and the concept of multiple universes depends on the conception of reality as a four-dimensional space-time continuum in which "everything that could possibly happen does happen in some universe. The prominent theoretical physicist, mathematician, and string theorist Brian Greene explains the multiverse hypothesis in detail.
The multiverse hypothesis has been criticized for a number of reasons:
Some physicists claim that the multiverse hypothesis is not falsifiable, and therefore not scientific. In response, defenders claim that the multiverse is testable and some suggest it may be more scientific than certain other untestable theories.
Some proponents of the theory say there are an infinite number of conceivable universes. According to quantum mechanics, universes without any classical space and time—idealised as sets of quantum wavefunctions—cannot be directly observed because they do not interact with anything in our universe and would have no effect on future events in our universe.
Brian Greene explains our universe would be affected by the ripples from bubbles of another universe that it bumps into as it passes by. However multiverse models are problematic because they can not explain why the Big Bang happened at all or why the laws of physics are as they are today, which seem to follow from mathematical constants.
The American theoretical physicist and string theorist Brian Greene discussed nine types of multiverses.
A multiverse of a somewhat different kind has been envisaged within string theory and its higher-dimensional extension, M-theory. But we will discuss these theories extensively in another video.
#multiverse #bgreene #science
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Sources: Brian Greene talks at Museum of Science Boston: https://www.youtube.com/watch?v=fJqpNudIss4
https://en.wikipedia.org/wiki/Multiverse….
The multiverse hypothesis has been criticized for a number of reasons:
Some physicists claim that the multiverse hypothesis is not falsifiable, and therefore not scientific. In response, defenders claim that the multiverse is testable and some suggest it may be more scientific than certain other untestable theories.
Some proponents of the theory say there are an infinite number of conceivable universes. According to quantum mechanics, universes without any classical space and time—idealised as sets of quantum wavefunctions—cannot be directly observed because they do not interact with anything in our universe and would have no effect on future events in our universe.
Brian Greene explains our universe would be affected by the ripples from bubbles of another universe that it bumps into as it passes by. However multiverse models are problematic because they can not explain why the Big Bang happened at all or why the laws of physics are as they are today, which seem to follow from mathematical constants.
The American theoretical physicist and string theorist Brian Greene discussed nine types of multiverses.
A multiverse of a somewhat different kind has been envisaged within string theory and its higher-dimensional extension, M-theory. But we will discuss these theories extensively in another video.
#multiverse #bgreene #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources: Brian Greene talks at Museum of Science Boston: https://www.youtube.com/watch?v=fJqpNudIss4
https://en.wikipedia.org/wiki/Multiverse….
active
Is Time Travel Possible? - The Science of Time With Neil deGrasse Tyson
Whether time travel is possible is among the most intriguing questions [...]
Whether time travel is possible is among the most intriguing questions in all of science. Neil deGrasse Tyson explains how time travel into the future is possible through Einstein's general relativity theory.
Time travel is a widely recognized concept in philosophy and science fiction. But is it truly possible in real life? What does physics tell us about time travel? Is it possible to travel to the past? There are some physical theories that can help us learn what time travel is and how it works. Neil deGrasse Tyson explains the nature of time and the conundrums of time travel.
In Einstein's theory of special relativity time slows down or speeds up depending on how fast you move relative to something else. So, for an observer in an inertial frame of reference, a clock that is moving relative to them will be measured to tick slower than a clock that is at rest in their frame of reference. This case is sometimes called special relativistic time dilation. Time dilation may also be regarded in a limited sense as "time travel into the future. The faster the relative velocity, the greater the time dilation between one another, with the rate of time reaching zero as one approaches the speed of light.
While some physicists argue whether time travel is possible, theoretical physicist Carlo Rovelli thinks that time is in fact illusion and our reality is just a complex network of events onto which we project sequences of past, present and future.
Neil deGrasse Tyson is quite possibly the most famous astrophysicist if not the most famous scientist of our time. He is a science communicator and author and he explains in layman's terms whether time travel is actually possible. Neil deGrasse Tyson has written numerous scientific books, his latest is "Letters from an Astrophysicist".
#TimeTravel #NeilTyson #Science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
https://spaceplace.nasa.gov/time-travel/en/
https://wiki.physics.udel.edu/AAP/Einstein's_equation_and_time_travel
https://vixra.org/pdf/1504.0122v1.pdf
https://www.nasa.gov/feature/goddard/2019/three-ways-to-travel-at-nearly-the-speed-of-light
https://www.youtube.com/watch?v=iLKTZr00xBg&ab_channel=NeildeGrasseTysonVideos
https://www.youtube.com/watch?v=wp6cnp1kZBY&ab_channel=THG
https://www.youtube.com/watch?v=hYkXNjn0Lqw&ab_channel=ScarlettTrantow….
Time travel is a widely recognized concept in philosophy and science fiction. But is it truly possible in real life? What does physics tell us about time travel? Is it possible to travel to the past? There are some physical theories that can help us learn what time travel is and how it works. Neil deGrasse Tyson explains the nature of time and the conundrums of time travel.
In Einstein's theory of special relativity time slows down or speeds up depending on how fast you move relative to something else. So, for an observer in an inertial frame of reference, a clock that is moving relative to them will be measured to tick slower than a clock that is at rest in their frame of reference. This case is sometimes called special relativistic time dilation. Time dilation may also be regarded in a limited sense as "time travel into the future. The faster the relative velocity, the greater the time dilation between one another, with the rate of time reaching zero as one approaches the speed of light.
While some physicists argue whether time travel is possible, theoretical physicist Carlo Rovelli thinks that time is in fact illusion and our reality is just a complex network of events onto which we project sequences of past, present and future.
Neil deGrasse Tyson is quite possibly the most famous astrophysicist if not the most famous scientist of our time. He is a science communicator and author and he explains in layman's terms whether time travel is actually possible. Neil deGrasse Tyson has written numerous scientific books, his latest is "Letters from an Astrophysicist".
#TimeTravel #NeilTyson #Science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
https://spaceplace.nasa.gov/time-travel/en/
https://wiki.physics.udel.edu/AAP/Einstein's_equation_and_time_travel
https://vixra.org/pdf/1504.0122v1.pdf
https://www.nasa.gov/feature/goddard/2019/three-ways-to-travel-at-nearly-the-speed-of-light
https://www.youtube.com/watch?v=iLKTZr00xBg&ab_channel=NeildeGrasseTysonVideos
https://www.youtube.com/watch?v=wp6cnp1kZBY&ab_channel=THG
https://www.youtube.com/watch?v=hYkXNjn0Lqw&ab_channel=ScarlettTrantow….
active
Elon Musk: Are We Living in a Simulation?
Among popular public thinkers advocating for the simulation hypothesis [...]
Among popular public thinkers advocating for the simulation hypothesis is Elon Musk who stated: if you assume any rate of improvement at all, games will eventually be indistinguishable from reality“ before concluding “that its most likely we’re in a simulation.
Elon Musk is known in the philosophical community to make "outrageous" claims, whether its about the advent of digital superintelligence, or in this case, according to some skeptics of the simulation hypothesis, Elon Musk exaggerates the probability that we might be living in a simulation.
Another high-profile proponent to the hypothesis is famous astrophysicist Neil Degrasse Tyson, who said in an NBC news interview that the hypothesis is correct giving “better than 50-50 odds” and adding: I wish I could summon a strong argument against it, but I can find none
In a review of the literature on simulated realities, philosopher Nick Bostrom argues that although it is difficult to prove that we are living in a simulation, "It is nevertheless generally considered acceptable philosophy to question the reality of our own existence.
A typical member of an advanced civilization would have a high probability of being among the simulated minds rather than among the original biological ones. Therefore, if we are typical, we should consider that we might be living in a simulation. Thus, the possibility that we are living in a simulation is greater than we might have supposed.
Some hypotheses hold that if it is possible to simulate reality, then it is also possible to leave behind copies of everyone within these simulations. It has further been suggested that these simulated people may be conscious or sentient, although this idea belongs more in the realm of philosophy rather than scientific inquiry.
Although the simulation hypothesis has sound philosophical arguments, before its taken seriously scientifically, proponents of the hypothesis have to produce experiments to support the idea with evidence.
#ElonMusk #Simulation #Science
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SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources: https://en.wikipedia.org/wiki/Simulation_hypothesis
Elon Musk on Recode: https://www.youtube.com/watch?v=wsixsRI-Sz4&list=PLKof9YSAshgyPqlK-UUYrHfIQaOzFPSL4
Elon Musk on JRE: https://www.youtube.com/watch?v=0cM690CKArQ&t=0s
Neil deGrasse Tyson explaining the simulation hypothesis: https://www.youtube.com/watch?v=CoMDzAiQpbY
Nick Bostrom: https://www.youtube.com/watch?v=GyUK-HEWw8s….
Elon Musk is known in the philosophical community to make "outrageous" claims, whether its about the advent of digital superintelligence, or in this case, according to some skeptics of the simulation hypothesis, Elon Musk exaggerates the probability that we might be living in a simulation.
Another high-profile proponent to the hypothesis is famous astrophysicist Neil Degrasse Tyson, who said in an NBC news interview that the hypothesis is correct giving “better than 50-50 odds” and adding: I wish I could summon a strong argument against it, but I can find none
In a review of the literature on simulated realities, philosopher Nick Bostrom argues that although it is difficult to prove that we are living in a simulation, "It is nevertheless generally considered acceptable philosophy to question the reality of our own existence.
A typical member of an advanced civilization would have a high probability of being among the simulated minds rather than among the original biological ones. Therefore, if we are typical, we should consider that we might be living in a simulation. Thus, the possibility that we are living in a simulation is greater than we might have supposed.
Some hypotheses hold that if it is possible to simulate reality, then it is also possible to leave behind copies of everyone within these simulations. It has further been suggested that these simulated people may be conscious or sentient, although this idea belongs more in the realm of philosophy rather than scientific inquiry.
Although the simulation hypothesis has sound philosophical arguments, before its taken seriously scientifically, proponents of the hypothesis have to produce experiments to support the idea with evidence.
#ElonMusk #Simulation #Science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources: https://en.wikipedia.org/wiki/Simulation_hypothesis
Elon Musk on Recode: https://www.youtube.com/watch?v=wsixsRI-Sz4&list=PLKof9YSAshgyPqlK-UUYrHfIQaOzFPSL4
Elon Musk on JRE: https://www.youtube.com/watch?v=0cM690CKArQ&t=0s
Neil deGrasse Tyson explaining the simulation hypothesis: https://www.youtube.com/watch?v=CoMDzAiQpbY
Nick Bostrom: https://www.youtube.com/watch?v=GyUK-HEWw8s….
active
Neil deGrasse Tyson: Are We Alone in The Universe?
Neil deGrasse Tyson explains the possibility of life existing [...]
Neil deGrasse Tyson explains the possibility of life existing elsewhere in the Universe. He explains where the elements that make up life on Earth come from. And how that has profound implications about the prevalence of life in the Universe. Certainly the question "Are we alone in the Universe" has got to be among the oldest, most fascinating and awe inspiring questions in science that remains unanswered. But Neil deGrasse Tyson paints a very interesting cosmic picture about life itself and why most astrophysicists indeed accept the probability of the existence of extraterrestrial life is high. At the very end he also has what he calls a disturbing and thought provoking question for the viewers.
So far, the only life we know of is right here on our planet Earth. Yet, there are compelling arguments to suggest we are not alone.
There are thousands of exoplanets that have been confirmed to exist in our galaxy and the likely number could be in the trillions.
Given how long life has had to evolve on Earth, it is possible that there are beings on other worlds that are even more advanced than we are. That would certainly have implications for our understanding of the origins of life.
A new study however, suggests that alien civilizations destroy themselves through progress, meaning our galaxy could be full of dead alien civilizations.
With a limited understanding of how life originated on Earth, and with so little understanding of what kind of life there is elsewhere in the universe, it is not too surprising we don’t know what we are going to find out there. But it seems very likely that other life will have developed in different ways to that which evolved on Earth.
So, are we alone in the universe? As Arthur C. Clarke has pointed out “Two possibilities exist: either we are alone in the universe or we are not. Both are equally terrifying.
#life #neiltyson #science
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SUPPORT us on Patreon: https://www.patreon.com/sciencetime
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Sources:
Cosmic Quandaries with Dr. Neil deGrasse Tyson at St Petersburg College: https://www.youtube.com/watch?v=CAD25s53wmE
Life the Universe and Everything with Neil deGrasse Tyson at American Museum of Natural History: https://www.youtube.com/watch?v=4KRZQQ_eICo&feature=youtu.be….
So far, the only life we know of is right here on our planet Earth. Yet, there are compelling arguments to suggest we are not alone.
There are thousands of exoplanets that have been confirmed to exist in our galaxy and the likely number could be in the trillions.
Given how long life has had to evolve on Earth, it is possible that there are beings on other worlds that are even more advanced than we are. That would certainly have implications for our understanding of the origins of life.
A new study however, suggests that alien civilizations destroy themselves through progress, meaning our galaxy could be full of dead alien civilizations.
With a limited understanding of how life originated on Earth, and with so little understanding of what kind of life there is elsewhere in the universe, it is not too surprising we don’t know what we are going to find out there. But it seems very likely that other life will have developed in different ways to that which evolved on Earth.
So, are we alone in the universe? As Arthur C. Clarke has pointed out “Two possibilities exist: either we are alone in the universe or we are not. Both are equally terrifying.
#life #neiltyson #science
SUBSCRIBE to our channel "Science Time": https://www.youtube.com/sciencetime24
SUPPORT us on Patreon: https://www.patreon.com/sciencetime
BUY Science Time Merch: https://teespring.com/science-time-merch
Sources:
Cosmic Quandaries with Dr. Neil deGrasse Tyson at St Petersburg College: https://www.youtube.com/watch?v=CAD25s53wmE
Life the Universe and Everything with Neil deGrasse Tyson at American Museum of Natural History: https://www.youtube.com/watch?v=4KRZQQ_eICo&feature=youtu.be….
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