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Anonymous File :-(, x)
>>67292
actually, mars is very ridden with impact craters, but, yes, not as much as the moon. It definately has several times the amount visible on earth though.
The atmosphere on mars is several times thinner than earth's atmosphere (around 100 times thinner), so the atmosphere does not protect much from asteroid impacts anymore. Mars was most likely covered with water and a dense atmosphere before though, so most of its impact craters are from present to around a few hundred million years ago, while the ones on the moon are from present to ~4 billion years ago. That's why there are more on the moon.
Also, a comparison between earth's and mars' atmosphere <--- The earth's atmosphere is 79% nitrogen, 20% oxygen, and 1% everything else, while mars' atmosphere is mostly carbon dioxide.
[/end science lesson]
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