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| Description: To account for Mercury’s high iron content, one theory proposes that a collision with a massive planetesimal stripped Mercury of most of its rocky mantle. (a) These three images show a computer simulation of a nearly head-on collision between proto-Mercury and a body one-sixth its mass Picture Stats: Views: 588 Filesize: 115.13kB Height: 900 Width: 1015 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=16010 |