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
What makes you think it doesn’t?
Gravity is a weak force, strong enough to hold on to some gas particles, see our atmosphere. Many more escape our pull and slowly drift away day by day.
Google magnetosphere.
Long short, our molten core generates a charge that keeps our atmosphere even safer.
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