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relativity

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Editorial illustration of Einstein sticking out his tongue, a famous photo

SCIENCE HISTORY

Why Is Albert Einstein Famous?

albert einsteinphysics

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Illustration of a black hole with a glowing accretion disk and spacetime distortion

Where gravity wins completely

What Is a Black Hole?

A black hole is a region of space where gravity is so strong that nothing, not even light, can escape. Here is what they are, how they form, and what falling into one would actually involve.

black holesspace

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