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masha68 [24]
3 years ago
10

Why does the moon lack an atmosphere?  

Physics
1 answer:
vesna_86 [32]3 years ago
8 0
Because when it had any, the warmth of the sun heated the atmosphere to the point where the average speed of the gas molecules exceeded the escape velocity for a body with the moon's mass and size. So, little by little, they escaped.
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