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
> surely it isn’t like a seal where air can’t escape Why not? What’s going to make it leave the earth? This “vacuum” isn’t constantly “pulling” on the air. The force that air molecule experiences is from the **pressure** from the air **underneath** that molecule. Once that molecule is in a place where the air below it isn’t pushing on it anymore, it’ll stay there.
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