Astronomy

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Thanks to The Great Courses Plus for sponsoring this episode of Space Time. Try a 30 day trial of The Great Course Plus at http://ow.ly/m8ms306GoxP. Quasars … the most metal thing in the universe. Support us on

Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime There’s one rule on Space Time: It’s never Aliens. But every rule has an exception and this rule is no exception because: It’s never aliens, until it is. So is it aliens yet? And on today’s Space Time we’re going to examine

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Check out Weathered on PBS Terra: https://youtu.be/q1hj9RCWuH0 Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime By the time you’ve read this, a billion billion dark matter particles may have

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Paul Dirac’s insights into the nature of Quantum Mechanics laid the foundation for Quantum Field Theory and predicted the existence of anti-matter. Part 1 in our series on Quantum Field Theory. Try Skillshare at http://skl.sh/spacetime You can

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Can we ever achieve absolute cold? Try CuriosityStream today: http://curiositystream.com/spacetime You can further support us on Patreon at https://www.patreon.com/pbsspacetime Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Thanks to Curiosity Stream for supporting PBSDS. You can get the first 60 days free if you sign up at curiositystream.com/spacetime and use the code “spacetime” during the sign-up process. Since the discovery of the Higgs boson,

Has the last great prediction of Einstein’s general relativity finally been verified? Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g For the past 90 years, the predictions laid out Einstein’s general theory of relativity have continued to be

Want to ask some sort of crazy question about Space?: Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g Let us know what topics you want to learn more about: http://bit.ly/spacetimepoll Every once in a while we

The double slit experiment radically changed the way we understand reality. To check out any of the lectures available from The Great Courses Plus go to http://ow.ly/QVaz302duhX and get ready to learn about everything from cooking to calculus. Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Sign up for the

Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE If vacuum energy really does have the enormous value predicted by quantum field theory then our gently expanding, geometrically flat universe shouldn’t exist. This is the vacuum catastrophe. You can further support us on Patreon at https://www.patreon.com/pbsspacetime

Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE To learn more about 23andMe head to https://23andme.com/spacetime Why strings? What are they made of? How did physicists even come up with this bizarre idea? And what’s all this nonsense of extra dimensions? You can further support

Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime That Einstein guy was a real bummer for our hopes of a star-hopping, science-fiction-y future. His whole “nothing travels faster than light” rule seems to ensure that exploration of even the local part of our galaxy will be an excruciating slow. But

Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Sign up for the mailing list to get episode notifications and hear special announcements! https://tinyurl.com/yx9cusk5 Check out the Space Time Merch Store https://pbsspacetime.com/ Why is it that we can see these multiple histories play out on the quantum scale, and why do

Primordial black holes may be lurking throughout our universe. How large are they, how many are out there and what would happen if they moved through our solar system? To learn more about black holes, gravity and so much more check out The Great Courses Plus by going to http://ow.ly/JqPz30491TL Get your own Space Time

Thank you to Draper and its Hack the Moon initiative for supporting PBS Digital Studios | Learn more at https://wehackthemoon.com. One of the fundamental questions humanity has always asked is how big is our Universe? For much of human history, people believed that Planet Earth was the very center of the entire universe. And Earth

Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime It may be that for every star in the universe there are billions of microscopic black holes streaming through the solar system, the planet, even our bodies every second. Sounds horrible – but hey, at least we’d have explained dark matter. Want

Our universe seems pretty complicated. We have a weird zoo of elementary particles, which interact through very different fundamental forces. But some extremely subtle clues in nature have led us to believe that the forces of nature were once unified, ruled by a single, grand symmetry. But how does one force separate into multiple? And

Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Why does the universe seem to be moving in one particular direction? You can further support us on Patreon at https://www.patreon.com/pbsspacetime Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us!

Support Us On https://www.patreon.com/pbsspacetime When a theory makes a prediction that disagrees with an experimental test, sometimes it means we should throw the theory away. But what if that theory has otherwise produced the most successful predictions in all of physics? Then, that little glitch may be pointing the way to layers of physics deeper

Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Was an incredible drop in entropy responsible for the Big Bang? If that’s the case, this would lead us to conclude that a great many other things are possible, including the likelihood that you are a Boltzmann

Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE It’s the most famous prediction of perhaps the most famous genius of our time … Stephen Hawking’s theory of Hawking Radiation. You can further support us on Patreon at https://www.patreon.com/pbsspacetime Get your own Space Time t­-shirt at

Is our universe a definitive single reality or is it merely one within an infinitely branching multiverse? Be sure to check out Physics Girl’s Dianna Cowern for more awesome science https://www.youtube.com/c/physicsgirl Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us

Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Entropy and the second law of thermodynamics has been credited with defining the arrow of time. You can further support us on Patreon at https://www.patreon.com/pbsspacetime Get your own Space Time t­-shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime

Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g SPACETIME IS BACK! And with this episode we welcome in Matt O’Dowd as the new host to rigorously take you through the mysteries of space, time, and the nature of reality. We’re

Matt challenges you to use quantum physics to win the lottery. Are you up to the task? Previous Episode on Quantum Eraser https://www.youtube.com/watch?v=8ORLN_KwAgs Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our

For those of you in New York City you can check out Matt live at PBS Nerd Night at the NYC YouTube Space on Thursday night September 22nd. Hope to see you there. to.pbs.org/nerdnight Albert Einstein strongly disagreed with Niels Bohr when it came to Bohr’s interpretation of quantum mechanics. Quantum entanglement settled the argument

Start your Audible trial today: http://www.audible.com/spacetime Hello from the other side. In this episode find out how quanta can can move through solid objects. Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g

Want to ask some sort of crazy question about Space?: Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g HAS SPACE ALWAYS BEEN BLACK? As long as we’ve been around, YES. But the universe gets much more exciting, AND much BRIGHTER, as we start winding

Has a fifth fundamental force been discovered and how will this effect our understanding of the universe? Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g Quantum Eraser Challenge Previous Episode

Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Worried about black holes? Consider this: Every time you accelerate – you generate an event horizon behind you. The more you accelerate away from it the closer it gets. Don’t worry, it can never catch up to

What happens when matter can’t get any denser yet somehow does? The answer – it becomes “strange.” Strange Stars may be the most massive stellar remnant that is just shy of forming a black hole. And they could be even cooler than black holes. Space Time is now on Patreon! If you’d like to support

Is mankind capable of achieving warp speed? Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g Inspired by Gene Roddenberry’s Star Trek, physicist Miguel Alcubierre set out to transform one of the cornerstones of science fiction iconography, the Warp Drive,

This episode on the physics of time syncs perfectly with Pink Floyd’s ‘Dark Side of the Moon.’ Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g Last week we learned how motion gives matter its mass. But how does motion

Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g The universe is HUGE. But, there is only so much of the universe we can ACTUALLY see, and if we wanted to measure that FINITE space, how would we do it? A gigantic ruler? One

What is the Higgs field and why is it a fundamental part of our universe? Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g Quantum Field Theory is generally accepted as an accurate description of the subatomic universe.

Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Are aliens watching Earth TV? We’d like to credit the SKA Organization for the image used in the thumbnail. Support us on Patreon! https://www.patreon.com/pbsspacetime Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook:

Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE If we, or any conscious being is around to witness the very distant future our galaxy, what will they see? How long will life persist as the stars begin to die? Subscribe to Hot Mess: https://www.youtube.com/channel/UCsaEBhRsI6tmmz12fkSEYdw You

Is all that exists just whatever exists right now? Is the past erased and the future a void yet to be filled? Well, the answer lies in between the past and the future – in the elusive, ever-moving eye-blink that we call the present. Sign Up on Patreon to get access to the Space Time

Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Could the mysterious Cold Spot found in the CMB be the result of a collision with a bubble universe? Try 23andMe at http://23andme.com/spacetime ____________________________________________________ [CORRECTION: The calculated ISW cooling from cold spot observed voids is 0.000032 Kelvin

Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime​ We know that gravity must cause clocks to run slow on the basis of logical consistency. And we know that gravity DOES cause clocks to run slow based on many brilliant experiments. But I never explained WHY or HOW gravity causes the

Thank you to World of Warships for supporting PBS, go to: http://go.thoughtleaders.io/1691420200309 and use the code: BATTLESTATIONS2020 to let them know we sent you. Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Sign up for the mailing list to get episode notifications and hear special announcements! https://tinyurl.com/yx9cusk5 Check out the

Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g Aliens! Could humans really be alone in this expansive universe? And if we’re not, how come we’ve never made contact with other intelligent life? Everyone’s thought about it; especially members of the scientific community. Join Gabe

Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Physicists have a long history of sticking our noses where they don’t belong – and one of our favorite places to step beyond our expertise is the question of consciousness and free will. Sometimes our musings are insightful, sometimes incoherent, and usually

Try Audible: http://www.audible.com/spacetime Causality is meant to move in one direction: forward. But the Quantum Eraser experiment seems to reverse causality. How and why can this happen and what are the implications of this experiment on how we understand Quantum Mechanics and our greater universe? Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at

Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Population III stars were the very first stars in our universe and far larger than any we can see today. Where are they now? Start your Audible trial today at http://www.audible.com/spacetime You can further support us on