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Gravitation

Starts With A Bang!

The Universe is out there, waiting for you to discover it.

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Gravitation

Ethan Siegel in Starts With A Bang!

Gravity doesn’t happen instantly

Newton thought that gravitation would happen instantly, propagating…

Ethan Siegel in Starts With A Bang!

Ask Ethan: Does Dark Energy Gravitate?

If all forms of energy experience gravitation, then why does…

Ethan Siegel in Starts With A Bang!

Our Home Supercluster, Laniakea, Is Dissolving Before Our Eyes

If galaxies are cities in the Universe…

Ethan Siegel in Starts With A Bang!

Can We Test Gravitational Waves For Wave-Particle Duality?

If quantum gravity is right, these…

Ethan Siegel in Starts With A Bang!

Ask Ethan: What’s It Like When You Fall Into A Black Hole?

It’s the ultimate way to go… and yet, it…

Ethan Siegel in Starts With A Bang!

Einstein Wins Again! General Relativity Passes Its First Extragalactic Test

The result validate…

Ethan Siegel in Starts With A Bang!

Dark matter theory triumphs in sweeping new study

When a phenomenon moves from “empirical correlation”…

Ethan Siegel in Starts With A Bang!

Ask Ethan: What Is Spacetime?

It’s the most fundamental fabric of the Universe itself. But how does it…