All Episodes

What If Gravity is Not Quantum?

The holy grail of physics is a quantum theory of gravity. What if it’s not possible?

How Will We (Most Likely) Discover Alien Life?

Alien life will most likely be discovered by faint changes in the color of alien sunsets.

Why Did Attosecond Physics Win the Nobel Prize?

The 2023 Physics Nobel prize has been awarded to three physicists for attosecond physics.

JWST Discovered The Farthest Star Ever Seen!

With the James Webb Space Telescope we’ve now seen the earliest star ever detected.

Are Many Worlds & Pilot Wave The Same Theory?

Some are arguing that Many Worlds and Pilot Wave are really the same.

Are Room Temperature Superconductors Impossible?

What if we could produce superconductivity at room temperature? It would change the world.

What New Science Would We Discover with a Moon Telescope?

We may need to build a radio telescope in the quietest place nearby - the moon!

What If Space is Not Empty?

Spacetime on its smallest scale is an ocean of black holes and wormholes...or so we think.

Did JWST Discover Dark Matter Stars?

Did JWST just find a new type of star powered by dark matter?

Do We Need a NEW Dark Matter Model?

Did we just uncover new evidence to support Cold Dark Matter?

Was the Gravitational Wave Background Finally Discovered?!?

The gravitational wave background has probably been detected using a pulsar timing array.

What If The Speed of Light is NOT CONSTANT?

Let’s explore how constant this speed of light fundamental constant really is.

Does Axionic Dark Matter Bind Galaxies Together?

Dark matter may be a quantum mechanical wave that literally holds galaxies together.

Did AI Prove Our Proton Model WRONG?

Has AI proven that the proton is made of 5 quarks rather than 3 quarks?

What Supernova Distance Would Trigger Mass Extinction?

How close is too close for supernova explosions?

Could We Move Planet Earth Across the Universe?

Could we turn our solar system into a spaceship and drive the Sun around the galaxy?

Is 'Perpetual Motion' Possible with Superfluids?

If we want to see quantum weirdness with our eyes, we’ll need Bose-Einstein Condensates.

Could LIGO Find MASSIVE Alien Spaceships?

Could LIGO find alien spacecraft accelerating to near light speed?

Fermions Vs. Bosons Explained with Statistical Mechanics!

How can we tell the difference between fermions & bosons? Statistical Mechanics!

NEW DISCOVERY About Supermassive Black Holes Explained!

Why has a newly discovered a black hole started pointing directly at us?

How Far Beyond Earth Could Humanity Spread?

There’s a hard limit to humanity’s expansion in the universe. So, how big can we get?

How Much Of The Universe Can Humanity Ever See?

Let’s figure out the absolute limit of our future view of the universe!

What If Black Holes Are Dark Energy?

Let see if Black Holes and Dark Energy are the same thing!

What’s Your Brain’s Role in Creating Space & Time?

Physics is the business of figuring out the structure of the world. So are our brains.

Are Space and Time Real?

Does the next level of physics require us to do away with space and time?

How Does The Nucleus Hold Together?

Nuclei are held together by a quirk of nature, without which there’d be nothing.

How Does the Earth Really Move Through The Galaxy?

Your motion through the universe is extremely complicated, so let’s figure it out!

What If Alien Life Were Silcon-Based?

Could there silicon-based life beyond Earth?

What If The Universe Is Math?

If you believe the Mathematical Universe Hypothesis then yes. And so are you.

The New Science of Moon Formation

Learn more about the time when the moon didn’t exist, and then hours later suddenly did.

About PBS Space Time

PBS 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. Host Matt O'Dowd breaks down the both the basic and incredibly complex sides of space and time.

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