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PODCAST

PBS Space Time

Space Time explores the outer reaches of space, the craziness of astrophysics, the possibilities of sci-fi, and anything else you can think of beyond Planet Earth with our astrophysicist host: Matthew O’Dowd. For all business inquiries and sponsorship opportunities please reach out to: pbsspacetime@lighthouseagents.com Matt O"Dowd spends his time studying the universe, especially really far-away things like quasars, super-massive black holes, and evolving galaxies. He uses telescopes in space to

science astronomy

All Episodes

22:56

Will The Sun’s Magnetic Field Flip This Year?

PBS Space Time ·

2026/04/10

Check out: https://incogni.com/spacetime and use the code spacetime Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Solar activity is still increasing in a sunspot cycle that is proving way more intense than scientists predicted. Just how much stronger is it going to get? Sign up for the mailing list to get episode notifications and hear special

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23:41

Can a Particle Be Neither Matter Nor Force?

PBS Space Time ·

2026/04/09

Get NordVPN 2Y plan + 4 months extra + up to 20Gb Saily data here ➼ https://nordvpn.com/spacetime It’s risk-free with Nord’s 30-day money-back guarantee! Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime All particles belong to two large groups: fermions like protons and electrons make everything we consider "matter", while bosons like photons and gluons transmit the fundamental

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21:19

How To Detect Faster Than Light Travel

PBS Space Time ·

2026/04/08

Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Warp drives may or may not be possible, but if they are then could a distant alien civilization’s warp fields produce gravitational waves that we could see here on Earth? According to a recent study.. Actually maybe, at least eventually. And we now know just what to look for and how to look for it. PBS Member Stations rely on

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18:19

What If Gravity Isn’t Quantum? New Experiments Explore

PBS Space Time ·

2026/04/08

👉 Head to https://brilliant.org/spacetime/ for a 30-day free trial + 20% off your annual subscriptionSign 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. They seem to require absurd experiments like a particle collider the size of a galaxy. Or we could try

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19:19

Was Penrose Right? NEW EVIDENCE For Quantum Effects...

PBS Space Time ·

2026/04/08

Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Nobel laureate Roger Penrose is widely held to be one of the most brilliant living physicists for his wide-ranging work from black holes to cosmology. And then there’s his idea about how consciousness is caused by quantum processes. Most scientists have dismissed this as a cute eccentricity—a guy like Roger gets to have at least one

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16:57

Do Black Holes Have to Be Black?

PBS Space Time ·

2026/04/07

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 of light. We also think of black as indicating absence of colour. But it turns out there is a way to

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18:06

Can We Create New Elements Beyond the Periodic Table?

PBS Space Time ·

2026/04/06

Go to https://www.buyraycon.com/spacetime for 20-40% off your order, plus free shipping! Brought to you by Raycon. Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Scientists have been slowly extending the periodic table one element at a time, pushing to higher and higher masses, and have discovered some incredibly useful materials along the way. But the elements at the current end of the table are so unstable that they decay almost as soon as

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20:18

Is Gravity RANDOM Not Quantum?

PBS Space Time ·

2026/04/05

Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime The holy grail of theoretical physics is to find the long-sought theory of quantum gravity. But what if this theory is as mythical as the grail of legend? What if gravity isn’t weirdly quantum at all, but rather … just a bit messy? Or random? So says the postquantum gravity hypothesis of Jonathan Oppenheim. PBS Member Stations rely

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17:58

The NEW PHYSICS of Black Hole Star Capture | Extreme...

PBS Space Time ·

2026/04/04

PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACESign 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 mass—that’s the Sagittarius A* supermassive black hole. These are perilous orbits, and sometimes a star

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18:23

What If The Universe DID NOT Start With The Big Bang?

PBS Space Time ·

2026/04/03

👉 Head to https://brilliant.org/spacetime/ for a 30-day free trial + 20% off your annual subscriptionCheck out the Space Time Merch Store https://www.pbsspacetime.com/shop Here’s the story we like to tell about the beginning of the universe. Space is expanding evenly everywhere, but if you rewind that expansion you find that all of space was once compacted in an infinitesimal point of infinite density—the singularity at the beginning of time. The expansion of the universe from this point is

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17:32

What If The Cosmological Constant Is NOT Constant?

PBS Space Time ·

2026/04/02

Weathered: Earth's Extreme is available globally at: https://to.pbs.org/WeatheredST or the PBS App (US Only)Check out the Space Time Merch Store https://www.pbsspacetime.com/shop We know that the universe is getting bigger. And we know that the speed that the universe is getting bigger is also getting bigger. The standard assumption is that the acceleration rate is itself constant, which will surely result in ultimate heat death. But a recent survey of primordial sound waves frozen into the way

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16:15

Do Neutron Stars Shine In Dark Matter?

PBS Space Time ·

2026/04/02

👉 Head to https://brilliant.org/spacetime/ for a 30-day free trial + 20% off your annual subscriptionSign 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 dark matter candidates. Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Sign up

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22:18

How Can Humanity Become a Kardashev Type 1 Civilization?

PBS Space Time ·

2026/04/01

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 get there? Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Sign up for the

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14:39

Can Space Time Remember?

PBS Space Time ·

2026/03/31

Thank you to Raycon for supporting PBS. Go to https://www.buyraycon.com/spacetime for up to 30% off your order, plus free shipping! Brought to you by Raycon.There are cosmic events so powerful that they leave permanent marks on the fabric of the universe itself. Imagine two colossal black holes spiraling into each other, yes they send ripples in the fabric of spacetime—gravitational waves that we’ve only recently learned to sense. Ripples pass, leaving the pond … or the universe … unchanged when

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19:21

Does the Planck Length Break E=MC^2?

PBS Space Time ·

2026/03/31

On November 29th, 20% off the whole merch store! https://www.pbsspacetime.com/shop Every good nerd knows that E=mc^2. Every great nerd knows that, really, E^2=m^2c^4+p^2c^2 Want to know what that even means? Sure, I’ll tell you, but today I’d like to invite you to an even higher level of nerdom with extra bits to Einstein’s famous equation that will make even the greatest nerds quiver in their … space time merch if they turn out to be real. PBS Member Stations rely on viewers like you. To support

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18:09

The NEW Ultimate Energy Limit of the Universe

PBS Space Time ·

2026/03/30

Remove your personal information from the web at https://joindeleteme.com/SPACETIME and use code SPACETIME for 20% off DeleteMe international Plans: https://international.joindeleteme.com Is there a limit to how much energy you can cram into, or pull out of one patch of space? Well, we thought so, but the James Webb Space Telescope has found a quasar that simultaneously breaks a century-old theoretical limit and may explain the conundrum of gigantic black holes in the early universe. Sign Up on

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16:01

What Does An Electron ACTUALLY Look Like?

PBS Space Time ·

2026/03/29

Enjoy 10% OFF on all Hoverpens and free shipping to most countries with code PBS: North America / UK / Australia / International: https://bit.ly/pbs_novium EU: https://bit.ly/pbs_noviumeu Take the PBS Annual Survey Here: https://to.pbs.org/2024SurveyST What does an electron really look like? I mean, if we zoom in all the way. Is it a sizeless speck of charge? Is it a multidimensional vortex of quantum strangeness? Is it the boundary of a tiny universe with universe-electrons of its own? Let’s find

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17:11

Does Infinity - Infinity = an Electron?

PBS Space Time ·

2026/03/28

Thanks to Radiacode for sponsoring this video. Use the promo code "PBS" to get an exclusive 10% discount at: https://103.radiacode.com/PBS What do you get if you take something that’s infinitely massive and combining with something else that’s negative infinitely massive? You get a single electron, at least that’s what it looks like in our most precise way of describing the quantum world. 15% Off The Entire Merch Store https://www.pbsspacetime.com/shop Sign Up on Patreon to get access to the

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21:06

How Many Black Holes Are In The Solar System?

PBS Space Time ·

2026/03/28

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 ray of light, a good clock, and the planet Mars. Check out the Space Time Merch

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16:28

Why Time Flows Differently Between Galaxies

PBS Space Time ·

2026/03/27

Thanks to Radiacode for sponsoring this video. Use the promo code "PBS" to get an exclusive 10% discount at: https://103.radiacode.com/PBS The universe is expanding and that expansion is accelerating under the power of dark energy and eventually all matter and energy will be dispersed over such unthinkable distances that nothing can stop space from blowing up infinitely. Unless of course cosmologists blundered and dark energy doesn't even exist. Then it's back to the drawing board. Sign Up on

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