Why doesn’t the atmosphere (air we breathe) just float off into space?
Some objects in space have atmospheres like Earth and Jupiter. Others like asteroids and the moon don’t have an atmosphere.
Why doesn’t earth atmosphere just drift away into space?
What am I missing about the concept of atmosphere?
In: Planetary Science
Gravity.
No, really, even though it seems like air is massless, it isn’t. In fact, in relatively small volumes it is more massive than you are expecting it to be. We are just used to 1 G of atmospheric pressure so it seems like nothing to us.
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