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Space On Mercury

Discussion in 'Tech, Science, and Space' started by Robby, Jun 2, 2009.

  1. Robby

    Robby The Robot

    Jul 28, 2004
    NASA Picture Of The Day
    On Mercury


    Why are many large craters on Mercury relatively smooth inside? Images from the MESSENGER spacecraft that flew by Mercury in October 2008 show previously... (More at NASA Picture Of The Day)

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