As far I understand gravity holds the air back down, but surely it isn’t like a seal where air can’t escape
In: Planetary Science
If you have a baseball and drop it, it will fall because of gravity. Air is made of atoms. Think of a single atom (molecule) of air as a tiny little ball. If you drop a tiny little ball, it will still fall because of gravity. The atmosphere is just a bunch of balls of air like a ball pit with the balls below holding up the balls above. Gravity makes sure all the little balls of air want to fall down into the pit.
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