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Is the Proxima System Our Best Hope For Another Earth? Sep 20, 2026 1686 Thank you to Morning Brew for supporting PBS. To learn more and sign up go to https://cen.yt/mbpbsspace Take the Space Time Fan Survey Here: https://forms.gle/wS4bj9o3rvyhfKzUA PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE At just four light years away, Proxima Centauri is our closest solar neighbor. The recent discovery of the

Are Room Temperature Superconductors UNACHIEVABLE? Sep 20, 2026 1425 PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Superconductive materials seem miraculous. Their resistanceless flow of electricity has been exploited in some powerful ways—from super-strong magnets used in MRIs, particle accelerators a

The REVOLUTIONARY PHYSICS of Black Hole Star Capture | Extreme Tidal Disruption Events Sep 20, 2026 1423 PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime If you track the motion of individual stars in the ultra-dense star cluster at the very center of the Milky Way you’ll see that they swing in sharp orbits around some vast but invisible ma

How to Communicate Across the Quantum Multiverse Sep 20, 2026 1485 Check Out Megawow on PBS Kids: https://youtu.be/meU4f31gqYI In the Many Worlds interpretation of quantum mechanics, the universal wavefunction is the reality, encompassing all possible histories and futures and all exist. But we are only sensitive to a slice of the wavefunction corresponding to our “world”, and due to the superposition principle our world can happily do its thing unperturbed by

How Luminiferous Aether Led to Relativity Sep 20, 2026 1428 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://pbsspacetime.com/ Sign up for the mailing list to get episode notifications and hear special announcements! https://mail

Does Quantum Immortality Save Schrödinger's Cat? Sep 20, 2026 1384 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 Antarctic Extremes on PBS Terra: https://www.youtube.com/watch?v=EvRAuy1ZmTc 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 ann

Is There A Basic Answer To The Fermi Paradox? Sep 20, 2026 1600 Use code PBS to get 15% off all Hoverpens and free shipping to most countries for the first 48 hours, 10% off after that. North America / UK / Australia / International: https://bit.ly/pbs_novium EU: https://bit.ly/pbs_noviumeu Around 2 billion years ago, life had plateaued in complexity, ruined the atmosphere, and was on the verge of self-annihilation. But then something strange and potentially

How Can Humanity Evolve Into a Kardashev Type 1 Civilization? Sep 20, 2026 1743 Learn More About Anydesk: https://anydesk.com/spacetime Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Imagine a world where humanity masters every planetary resource available to it—our first step on the famous Kardeshev scale of technological advancement. How distant is that step? Will we even become a true Type-1 civilization, and how can we g

How Magnetism Shapes The Universe Sep 20, 2026 1488 Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://www.pbsspacetime.com/shop How far can you follow a compass needle? As far as the north magnetic pole, where the needle starts spinning wildly? Compass needles align with magnetic field lines, and on the precise spot of magnetic north, those field lines are

Venus May Have Life! Sep 20, 2026 1242 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 Overview of PBS Terra: https://bit.ly/33otrUn If you rank the most habitable places in our solar system Venus lands pretty low, with surface temperatures hot enough to melt lead and sulphuric acid rain. And yet it may have just jumped to the front of the

The NEW Crisis in Cosmology Sep 20, 2026 1433 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ https://www.patreon.com/pbsspacetime I have good news and bad news. Bad news first: two years ago we reported on the Crisis in Cosmology. Since then, it’s only gotten worse. And actually, the good news is also that the crisis in cosmology has actually gotten worse

What If We Inhabit a Superdeterministic Universe? Sep 20, 2026 1477 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Today we’re going to try to save reality - or at least realism. However this rescue effort has a price; one that you may not be willing to pay. Your very soul, or at least your free will,

Are Many Worlds & Pilot Wave THE SAME Interpretation? Sep 20, 2026 1389 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime It’s hard to interpret the strange results of quantum mechanics, though many have tried. Interpretations range from the outlandish—like the multiple universes of Many Worlds, to the almos

Does Time Cause Gravity? Sep 20, 2026 935 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ 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

The NEW Warp Drive Possibilities Sep 20, 2026 1478 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ 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

How Does Gravity Affect Light? Sep 20, 2026 1089 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ https://www.patreon.com/pbsspacetime We know that gravity exerts its pull on light, and we have an explanation for why. Actually, we have multiple explanations that all predict the same thing. And at first glance, these explanations seem to describe completely di

Theory of Everything Controversies: Livestream Sep 20, 2026 5412 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ The second in our two event series about Theories of Everything! Watch the first one: https://www.youtube.com/watch?v=_izocEgArtQ Please subscribe to Brian Keating's YouTube Channel to watch one-on-one interviews with the guest speakers and more: https://www.youtu

Quantum Energy Teleportation Actually EXISTS! Sep 20, 2026 1549 Remove your personal information from the web at https://joindeleteme.com/SPACETIME The vacuum of space is a chaotic sea of quantum fluctuations. Some have said that this vacuum energy can be harvested to build our future starship engines, or manipulated to build warp drives. It can't. But it is technically possible to move real energy through the quantum vacuum without it passing through interve

The FRESH SCIENCE of Moon Formation Sep 20, 2026 1682 To Learn More Languages Check Out: https://speakly.app.link/Speakly PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Einstein once asked whether “the moon exists only when I look at it?". It was rhetorical objection to the idea that mea

How the Higgs Mechanism Give Things Mass Sep 20, 2026 1428 Take the Space Time Fan Survey Here: https://forms.gle/wS4bj9o3rvyhfKzUA PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Fermilab physicists really care about the mass of the W boson. They spent nearly a decade recording collisions in

What If Gravity Isn't Quantum? New Experiments Examine Sep 20, 2026 1444 👉 Head to https://brilliant.org/spacetime/ for a 30-day free trial + 20% off your annual subscription Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime If we discover how to connect quantum mechanics with general relativity we’ll pretty much win physics. There are multiple theories that claim to do this, but it’s notoriously difficult to test them.

Mapping the Multiverse Sep 20, 2026 1406 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://pbsspacetime.com/ Sign up for the mailing list to get episode notifications and hear special announcements! https://mail

How An Extreme New Star Could Change All Cosmology Sep 20, 2026 1470 Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime A new white dwarf has been discovered (poetically named: ZTF J1901+1458) that’s doing some stuff that no white dwarf should ever be able to do. In fact, it has multiple properties that are so extreme that it almost certainly did NOT form in the way that we thought all white dwarfs formed. This one pec

Theory of Everything Livestreams with Amazing Guests Sep 20, 2026 254 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Join two epic livestreams about Theories of Everything! Sign up for prizes, a download link to the videos, and more at http://www.pbsspacetime.com/events. Check out our co-moderator Brian Keating's incredible channel at: https://www.youtube.com/DrBrianKeating Jul

Why Is 1/137 One of the Biggest Unsolved Mysteries In Physics? Sep 20, 2026 1222 Thank you to Squarespace for supporting PBS. Go to https://www.squarespace.com/pbs for a free trial, and when you are ready to launch, go to Squarespace.com/PBS to save 10% off your first purchase of a website or domain. PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! htt

How Are Quasiparticles Separate From Particles? Sep 20, 2026 1287 For more information on membership go to https://www.magellantv.com and use code PBS PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime The device you’re watching this video on is best understood by thinking about positive and negative ch

Year End Q&A Sep 20, 2026 4123 In this 2022 end of year, Ask Matt anything, Matt discussed the upcoming year ahead for Space Time, Black Holes, the problem with the question of free will, the nature of photons of light and more! Learn more about your ad choices. Visit megaphone.fm/adchoices

How Many Black Holes Reside In The Solar System? Sep 20, 2026 1671 Learn More About Anydesk: https://anydesk.com/spacetime Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Dark matter has eluded us for many decades. Even our most advanced particle colliders and sophisticated underground detectors have come up short. But it may be that we can finally solve this mystery with a much simpler experiment, involving a r

What Happened Before the Big Bang? Sep 20, 2026 1115 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 the new Space Time Merch Store! https://pbsspacetime.com/ Support Space Time on Patreon https://www.patreon.com/pbsspacetime We actually have a pretty good idea of what might have happened before the Big Bang. That is, as long as we define the Big Bang

Loop Quantum Gravity Explained Sep 19, 2026 1397 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://pbsspacetime.com/ It’s time we talked about loop quantum gravity. What exactly is it? What are the loops? And can it rea

The Most Significant Satellite You've (Probably) Never Heard Of Sep 19, 2026 1189 Remove your personal information from the web at https://joindeleteme.com/SPACETIME One of the most important reasons we go to space is to know our own planet better. Today I'm going to tell you about an orbiting facility that literally watches Earth's biosphere breath and grow and die with incredible resolution. I'll talk about its profound existential and economic importance, and about why it's

How to Find ALIEN Dyson Spheres Sep 19, 2026 1166 PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Take the Space Time Fan Survey Here: https://forms.gle/wS4bj9o3rvyhfKzUA ***** Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime On our search for alien lifeforms we scan for primitive biosignatures, and wait and hope for their errant s

What If the Galactic Habitable Zone LIMITS Intelligent Life? Sep 19, 2026 1190 Check Out Matt on Fate & Fabled Here: https://youtu.be/utJZ8YmXOnc PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Our solar system is a tiny bubble of habitability suspended in a vast universe that mostly wants to kill us. In fact, a

Breaking The Heisenberg Uncertainty Principle Sep 19, 2026 886 Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Quantum mechanics forbids us from measuring the universe beyond a certain level of precision. But that doesn’t stop us from trying. And in some cases succeeding, by squeezing the Heisenberg uncertainty principle to its breaking point. Check out the Space Time Merch Store https://www.pbsspacetime.com/

Is Time Travel Impossible? Sep 19, 2026 1065 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://pbsspacetime.com/ Invitation to Time Travelers: https://www.youtube.com/post/UgzeIA0O00-bVioxU4t4AaABCQ Time travel sto

Computing a Universe Simulation Sep 19, 2026 1193 Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Physics seems to be telling us that it’s possible to simulate the entire universe on a computer smaller than the universe. You can further support us on Patreon at https://www.patreon.com/pbsspacetime Space Time Challenge Winners Jin Du Loren Booker Kevin Selva Prasanna May

How Will the Universe End? | Space Time Sep 19, 2026 1417 Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE Thanks to Wix for supporting PBS Digital Studios. You can go to https://bit.ly/2o1DSHZ to get started on Wix Code! In 100 trillion years the era of stars will be over. We live in an unusual age – the age when the stars still shine. We should count ourselves lucky – nearly al

How Stars Destroy Each Other Sep 19, 2026 1202 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://pbsspacetime.com/ Sign up for the mailing list to get episode notifications and hear special announcements! https://mail

Is The Universe Finite? Sep 19, 2026 1283 Thanks to Brilliant for supporting PBS. Learn more at: https://www.brilliant.org/spacetime PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE The universe is big, really, really big. Although according to a new paper, it may literally be infinitely smaller than we previously thought. Sign Up on Patreon to get access to the Space Ti

Can Viruses Travel Between Planets? Sep 19, 2026 1374 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://pbsspacetime.com/ Sign up for the mailing list to get episode notifications and hear special announcements! https://mail

Did AI Invalidate Our Proton Model WRONG? Sep 19, 2026 1301 PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime The humble proton may seem simple enough, and they’re certainly common. People are made of cells, cells are made of molecules, molecules are made of atoms, atoms are made of electrons, pro

Did Life on Earth Come from Space? Sep 19, 2026 1458 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 the new Space Time Merch Store! https://pbsspacetime.com/ How did life on Earth get started? Did life on Earth originate on another planet? Either Mars, or in a distant solar system? Could Earth life have spread to have seeded life elsewhere? Let’s see w

Do Black Holes Have to Remain Black? Sep 19, 2026 1302 Check out the Space Time Merch Store https://crowdmade.com/collections/pbsspacetime Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime The primary characteristic that defines black holes is in the name. Black holes are black. The gravitational pull at the event horizon is so powerful that not even light can escape. In this case, black means absence o

New Results in Quantum Tunneling vs. The Speed of Light Sep 19, 2026 1395 Learn More about Brilliant: https://brilliant.org/SpaceTime/ Paradoxically, the most promising prospects for moving matter around faster than light may be to put a metaphorical brick wall in its way. New efforts in quantum tunneling - both theory and experiment - show that superluminal motion may be possible, while still managing to avoid the paradox of superluminal signaling.Paradoxically, the m

Could the Higgs Boson Point Us Toward Dark Matter? Sep 19, 2026 1155 For more information please go ➼ https://nordvpn.com/spacetime PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime The discovery of the Higgs boson ten years ago in the Large Hadron Collider was the culmination of decades of work and the

What If A Black Hole Dwelt Inside The Sun? | Hawking Stars Sep 19, 2026 1449 Check out the NEW Space Time Merch Store: https://www.pbsspacetime.com/shop Use Code: PBS at Checkout for 15% off in December PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime A fun nightmare sci-fi scenario is the sun being consumed by

Electrons DO NOT Spin Sep 19, 2026 1434 Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Quantum mechanics has a lot of weird stuff - but there’s thing that everyone agrees that no one understands. I’m talking about quantum spin. Let’s find out how chasing this elusive little behavior of the electron led us to some of the deepest insights into the nature of the quantum world. Spin Rende

Is There Support For a Vast Multiverse? Sep 19, 2026 1459 Learn More About Anydesk: https://anydesk.com/spacetime In 1987, Steven Weinberg wrote a cute little paper entitled “Anthropic Bound on the Cosmological Constant”. I say cute little paper because it feels minor in comparison to, say, electroweak unification theory that won him the Nobel Prize. Weinberg was foundational in establishing the standard model of particle physics, and represented an en

What's Your Brain's Purpose in Producing Space & Time? Sep 19, 2026 1286 PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Physics is the business of figuring out the structure of the world. So are our brains. But sometimes physics comes to conclusions that are in direct conflict with concepts fundamental to o

Why The Multiverse Might Actually Be Real Sep 19, 2026 1563 Thanks to Displate for sponsoring the video. Use code SPACETIME at checkout for exclusive discounts on your order at https://displate.com/@spacetime 25% off for 1 Displate, 32% off for 2 to 3, 37% off for 4 and more. Valid on Textra. Not valid on Limited Edition & Lumino. The multiverse pops out of quite a few theories in physics, and has been proposed as a solution to certain vexing problems. Bu

Do Neutron Stars Gleam Within Dark Matter? Sep 19, 2026 1260 👉 Head to https://brilliant.org/spacetime/ for a 30-day free trial + 20% off your annual subscription Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Neutron stars aren't dark matter--we figured that out a while ago. But new research is telling us that they may be dark matter factories. They may produce the exotic axion, one of the most popular da

2021 End of Year AMA! Sep 19, 2026 2603 Learn more about your ad choices. Visit megaphone.fm/adchoices

Will The Big Bang Happen ANEW (and Anew)? Sep 19, 2026 1434 Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime How did the universe begin? How can something come from nothing? One way to “solve” this most difficult of philosophical conundrums is to avoid it altogether. Maybe the universe didn’t begin. Maybe the Big Bang was just one in an endless cycle. Check out the Space Time Merch Store https://www.pbsspac

What’s On The Other Side Of A Black Hole? Sep 19, 2026 1199 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ 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://p

Why Life on Mars Will RUIN Humanity Sep 19, 2026 1680 Click this link: https://www.boot.dev/?promo=spacetime and use my code SPACETIME to get 25% off your first payment for boot.dev Recent findings have brought us closer than we’ve ever been to confirming life beyond the Earth. As we wait for confirmation or otherwise, let’s think about what this will tell us about life everywhere, and also about our own imminent destruction. Sign Up on Patreon to

What Occurs Within a Proton? Sep 19, 2026 1560 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime If we ever want to simulate a universe, we should probably learn to simulate even a single atomic nucleus. But it’s taken some of the most incredible ingenuity of the past half-century to

Could LIGO Find GIANT Alien Spacecraft? Sep 19, 2026 1299 PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Whenever we open a new window on the universe, we discover things that no one expected. Our newfound ability to measure ripples in the fabric of spacetime—gravitational waves—is a very new

How To Identify Black Holes By Catching Neutrinos Sep 19, 2026 1469 Check out PIA's special Black Friday deal for Space Time fans https://www.piavpn.com/SpaceTime PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Neutrinos are one of the most bizarre of known particles. Black holes are probably the most

How To Become an Astrophysicist + Challenge Question! Sep 19, 2026 1003 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 the new Space Time Merch Store! https://pbsspacetime.com/ Support Space Time on Patreon https://www.patreon.com/pbsspacetime Do you want to major in Astrophysics? Are you thinking about becoming (or ever just wondered how one becomes) an Astrophysicists

How Many Forms Of Matter Exist? Sep 19, 2026 1136 Enjoy Far Out (https://youtu.be/jpUjze3v_6c) and Why Am I Like This (https://youtu.be/eWzBNfBnFys) on PBS Terra ( https://youtube.com/pbsterra) PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Let’s talk about states of matter. You know

How Will We (Most Probably) Discover Extraterrestrial Life? Sep 19, 2026 1480 PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime The first discovery of extraterrestrial life will almost certainly NOT be when it visits us, nor when we visit it. It won’t be when we see it’s stray TV signals. It’ll be in the excruciati

The REAL Possibility of Imaging Alien Planets! Sep 19, 2026 1680 Go to https://squarespace.com/pbs to get a free trial and 10% off your first purchase of a website or domain. PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime I’m going to tell you about the craziest proposal for an astrophysics missio

How Black Holes Spin Space Time Sep 19, 2026 1123 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. PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Sign up for the m

No Dark Matter = Proof of Dark Matter? Sep 19, 2026 1162 You can learn more about CuriosityStream at https://curiositystream.com/spacetime PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE We’ve been failing to detect dark matter for decades. Finally, the latest failure to detect dark matter may have actually proved its existence. One of these is true: either most of the matter in the uni

Is Dark Matter Made of Particles? Sep 19, 2026 1295 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 streamed through your b

At What Point Does Spacetime Shift Into Quantum? Sep 19, 2026 1582 Learn More About Anydesk: https://anydesk.com/spacetime To observe the quantum nature of gravity and of spacetime itself, we need a particle collider the size of the solar system. Or we could just physics smarter and build one on a lab bench. Here’s how. Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https:/

Can We Break the Universe? Sep 19, 2026 1287 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Today we’re going to delve into a couple of the most famous paradoxes of special relativity: the Twin Paradox, The Ladder Paradox (aka the Barn-Pole Paradox), and a p

The Crisis In Physics: Are We Failing To Detect 17 Layers of Reality? Sep 19, 2026 1557 Remove your personal information from the web at https://joindeleteme.com/SPACETIME Big things are made of smaller things, and those smaller things are made of smaller things still. That’s reductionism in a nutshell, and digging our way to the smallest layer has been one of the primary goals of physics for ever. But what if, just before we reach the bottom, we find out that reductionism fails? S

Dark Forest: Should We NOT Communicate with Aliens? Sep 19, 2026 1229 Check out the Space Time Merch Store https://www.pbsspacetime.com/shop In 1974 we sent the Arecibo radio message towards Messier 13, a globular cluster near the edge of the Milky Way, made up of a few hundred thousand stars. The message was mostly symbolic; we weren’t really expecting a reply. Yet surely other civilisations out there are doing the same thing. So, why haven’t we heard anything? Wh

We Had It WRONG About the Quantum Eraser! ft. @LookingGlassUniverse Sep 19, 2026 1931 Thank you to Cyber GhostVPN for Supporting PBS. Learn More About Cyber GhostVPN: https://cyberghostvpn.com/PBSSpaceTime Does quantum mechanics allow the future to retroactively influence the past, as in the infamous delayed choice quantum eraser experiment? How about we get an actual quantum physicist--who many of you already know--to show us how to do this experiment at home, and hopefully set

Can Future Colliders Break the Standard Model? Sep 19, 2026 1414 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://pbsspacetime.com/ Sign up for the mailing list to get episode notifications and hear special announcements! https://mail

How Quantum Entanglement Creates Entropy Sep 19, 2026 1520 Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Entropy is surely one of the most perplexing concepts in physics. It’s variously described as a measure of a system’s disorder - or as the amount of useful work that you can get from it - or as the information hidden by the system. Despite the seeming ambiguity in its definition, many physicists hold

The Doomsday Argument Sep 19, 2026 1414 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ 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://mailchi.mp/1a6eb8f2717d/spacetime Check out the Space Time Merch St

What are the Strings in String Theory? Sep 19, 2026 1282 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 us on Patreon at https://www.patreon.com/p

The Arrow of Time and How to Reverse It Sep 19, 2026 1145 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Ever wish you could travel backward in time and do things differently? Good news: the laws of physics seem to say traveling backward in time is the same as traveling

Are The Fundamental Constants Delicately Tuned? | The Naturalness Problem Sep 19, 2026 1552 Learn More About Anydesk: https://anydesk.com/spacetime Did God have any choice in creating the world? So asked Albert Einstein. He was being poetic. What he really meant, was whether the universe could have been any other way. Could it have had different laws of physics, driven by different fundamental constants. Or is this one vast and complex universe the inevitable result of an inevitable and

Secrets of the Cosmic Microwave Background Sep 19, 2026 1375 You can learn more about CuriosityStream at https://curiositystream.com/spacetime PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE Check out the new Space Time Merch Store! https://pbsspacetime.com/ Support Space Time on Patreon https://www.patreon.com/pbsspacetime Hook up an old antenna to your TV and scan between channels. The

Will You Travel to Space? Sep 19, 2026 1267 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 Sound Field: http://youtube.com/soundfieldpbs Check out the new Space Time Merch Store! https://pbsspacetime.com/ Support Space Time on Patreon https://www.patreon.com/pbsspacetime Thanks to Matthias Rüby for on-site camera work. https://www.instagram.

What If The Speed of Light Were NOT CONSTANT? Sep 19, 2026 1678 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime One of the most fundamental physics facts is that the speed of light in a vacuum is constant for all observers. But can we really be sure that the speed of light wasn’t different in the p

How To Capture Black Holes Sep 19, 2026 1182 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://pbsspacetime.com/ Sign Up for the Space Time Mailing List https://tinyurl.com/yx9cusk5 Black holes are awesome - but h

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