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If comets are icy things, and are constantly crashing into the Earth and the Moon, why shouldn't we expect water on the moon?
by 1024core 6y ago
If comets are icy things, and are constantly crashing into the Earth and the Moon, why shouldn't we expect water on the moon?
- vladTheInhaler 6y agoI think it's not so much the presence as it is the amount. Given the moon's lack of atmosphere, low gravity, and exposure to solar wind, you might expect the water to quickly boil off into space. But apparently it sticks around for quite a while.
- marcosdumay 6y agoBecause the Moon doesn't have an atmosphere, so any water that gets slightly hot vaporizes and goes away into space. So, at least near the surface and on areas where the Sun light reaches, it's not obvious at all that we would find any water.
- ric2b 6y agoShouldn't the moon's gravity keep it there?