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Universe

Starts With A Bang!

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

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Universe

Ethan Siegel in Starts With A Bang!

The Universe is not symmetric

The laws of physics obey certain symmetries and defy others. It’s…

Ethan Siegel in Starts With A Bang!

Is the universe actually a fractal?

On larger and larger scales, many of the same structures we see at…

Ethan Siegel in Starts With A Bang!

Our Universe has more galaxies than Carl Sagan ever imagined

Forget billions and billions. When it…

Ethan Siegel in Starts With A Bang!

Einstein: the lone genius is pure mythology

Many mavericks look to Einstein as a unique figure, whose…

Ethan Siegel in Starts With A Bang!

Ask Ethan: Is Earth the center of the Universe?

In all directions, at great distances, the Universe…

Ethan Siegel in Starts With A Bang!

10 insights about the expanding Universe from a Nobel Laureate

In the expanding Universe, different…

Ethan Siegel in Starts With A Bang!

7 unnecessary assumptions about life in the Universe

So far, Earth is the only planet that we’re…

Ethan Siegel in Starts With A Bang!

Ask Ethan: Why don’t we feel the Universe’s expansion accelerating?

The Universe isn’t just expansion…

Ethan Siegel in Starts With A Bang!

Why do we count the Universe’s age from 13.8 billion years ago?

The Universe is 13.8 billion years…

Ethan Siegel in Starts With A Bang!

Why doesn’t the expanding Universe break the speed of light?

Just 13.8 billion years after the hot Big…