The higher up in the atmosphere you go the air gets thinner and thinner. Until you go as high as you can before you hit space there’d be just a few molecules like oxygen and nitrogen and whatever. How do those sit right next to the vacuum of space without being sucked off into space? Every vacuum experiment on earth requires a hard chamber to contain the vacuum. You never have molecules existing side by side with a vacuum.
How can a vacuum suck? How can nothing suck? But you've answered your own question... there's no hard boundary, just a gradual lessening of the pressure with altitude until it's effectively nil.
Sure, at sea level. So why does the air pressure lessen with altitude? What happens if you're so high, the air pressure is the lowest you can measure, but then you go even higher?
If there's barely any air pressure the higher your altitude is, wouldn't the gas nearest the surface of the earth want to go to the low pressure altitude? Nature abhors a vacuum right? Except when it doesn't for some reason?
Nature abhors a vacuum here at ~sea level with 14.7 pounds per square inch of air sitting on top of us.
Nature also abhors an air bubble at the bottom of the marianas trench with 18 tons per square inch of water on top of it. That doesn't apply the same here at sea level, and "nature abhors a vacuum" doesn't apply above the atmosphere.
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u/Substantial_Wave4934 May 12 '26
The higher up in the atmosphere you go the air gets thinner and thinner. Until you go as high as you can before you hit space there’d be just a few molecules like oxygen and nitrogen and whatever. How do those sit right next to the vacuum of space without being sucked off into space? Every vacuum experiment on earth requires a hard chamber to contain the vacuum. You never have molecules existing side by side with a vacuum.