stromm

stromm t1_j9xy89j wrote

LOTS of meteors skip off the Earth’s atmosphere. But not the tiny or very large ones.

Tiny can’t maintain enough kinetic energy because the atmospheric resistance slows them down too much. Very large (and I would guess that’s more than 100lbs, since most meteorites are below a pound) are more affected by gravity pulling them deeper into the atmosphere, which then slows them down.

The in between come in at a very shallow angle. Not close enough for gravity to pull deeper, so they only graze the top much less dense part of our atmosphere. So they skip off.

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stromm t1_j9cmmhe wrote

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