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Oct 15, 2018 at 20:55 comment added ckersch Atmosphere-less planets don't tend to have particularly stunning landscapes. Mars and the Moon, for example, tend towards flat plains and rounded hills. On the contrary, most of the dramatic landscapes, jagged mountains, and deep valleys on Earth are shaped in large part by the water cycle. Without an atmosphere, there's no water to carve canyons or form glaciers to sharpen the mountains.
Oct 13, 2018 at 17:38 history answered Henry Taylor CC BY-SA 4.0