Eli5: why do all objects entering the earths atmosphere from space catch fire?

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Jus wondering like why asteroids and those detachable things from spaceships catch fire when entering earth

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They are moving so fast that when they hit the atmosphere the air can’t move out of the way. Instead, the air gets compressed. When you compress air, it heats up, and when it gets hot enough, it glows. This heat will also transfer into a spacecraft’s heat shield or the asteroid, and bits vaporize off and get blown away.

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