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I know density of atmosphere is bigger as we move closer to the surface of the Earth, but what is the reason gas molecules don't fall to the ground all at once?
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Accepted suggested edits for Robert Frost's answer by Robert Frost.

#195906678 Oct, 2013 1:34 PM

Answer edited by Robert Frost.
...vity is balanced by a a pressure gradient ... (view context)

#195906668 Oct, 2013 1:34 PM

Edit suggested for Robert Frost's answer by Nanda Kishore.
...vity is balanced by a a pressure gradient ... (view context)

#114582996 Jan, 2013 11:08 PM

Answer added by Robert Frost.
Hydrostatic balance.  Compression from gravity is balanced by a a pressu...

#114556166 Jan, 2013 8:44 PM