All Episodes

The Real Science of the EHT Black Hole

The Real Science of the EHT Black Hole

No Dark Matter = Proof of Dark Matter?

We’ve been failing to detect dark matter for decades.

The Holographic Universe Explained

The Holographic Universe Explained

The Edge of an Infinite Universe

Have you ever asked “what is beyond the edge of the universe?”

Is Dark Energy Getting Stronger?

The power of Dark Energy may be increasing as the universe ages.

Will You Travel to Space?

Will You Travel to Space?

Secrets of the Cosmic Microwave Background

Secrets of the Cosmic Microwave Background

Sound Waves from the Beginning of Time

Sound Waves from the Beginning of Time

Perpetual Motion From Negative Mass?

Challenge question: if 1kg of apples is $5 and 2kg is $10, how much is -1kg of apples?

The Crisis in Cosmology

The hubble constant--the rate of expansion of our universe--has consumed astronomers.

Our Antimatter, Mirrored, Time-Reversed Universe

The foundations of quantum theory rests on its symmetries.

Are Dark Matter And Dark Energy The Same?

Astronomers are the worst at naming things. Dark energy AND dark matter?

Why String Theory is Wrong

Why String Theory is Wrong

Did Life on Earth Come from Space?

Did life on Earth originate on another planet?

'Oumuamua Is Not Aliens

It’s never aliens … until it is. So let’s talk about ‘oumuamua.

Are Virtual Particles A New Layer of Reality?

Let me tell you a story about virtual particles. It may or may not be true.

Why String Theory is Right

Some see string theory as the one great hope for a theory of everything.

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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