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Thermodynamics

Starts With A Bang!

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Thermodynamics

Ethan Siegel in Starts With A Bang!

The only two “arrows of time” we have don’t match

Our thermodynamic arrow of time explains why the…

Ethan Siegel in Starts With A Bang!

The entropy of a closed system doesn’t always increase

The second law of thermodynamics is an…

Ethan Siegel in Starts With A Bang!

Be thankful for an out-of-equilibrium Universe

Every time our Universe cools below a critical…

Ethan Siegel in Starts With A Bang!

Cosmic inflation solves the ‘past hypothesis’ problem

Billions of years ago, the ever-increasing…

Ethan Siegel in Starts With A Bang!

Flamingos stand on just one leg, and physics is the surprising reason why

There’s an enormous…

Ethan Siegel in Starts With A Bang!

Ask Ethan: If The Universe Stops Expanding, Will Time Run Backwards?

Time always moves in the same…

Ethan Siegel in Starts With A Bang!

No, Thermodynamics Does Not Explain Our Perceived Arrow Of Time

It’s true that we have a thermodynamic…

Ethan Siegel in Starts With A Bang!

Ask Ethan: Why Is The Black Hole Information Loss Paradox A Problem?

It was Stephen Hawking’s…

Ethan Siegel in Starts With A Bang!

We Still Don’t Understand Why Time Only Flows Forward

The past is gone, the future not yet here, only…

Ethan Siegel in Starts With A Bang!

Ask Ethan: What Was The Entropy Of The Universe At The Big Bang?

Was it really a low-entropy state…