When did the cratering on the Moon occur?

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     about a billion years ago
      at about equal rates throughout its history
      mostly very recently
      mostly early in its history
      in one short meteor storm
asked Sep 20, 2012 in Astronomy by anonymous
    

1 Answer

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mostly early in its history
answered Sep 22, 2012 by SkyStar ~Expert~ (2,855 points)

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