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Thread: Ancient Mars Covered by Vast Ocean

  1. #1 Ancient Mars Covered by Vast Ocean 
    Join Date
    May 2008
    More than 3 billion years ago, the northern plains of Mars were covered by a vast ocean that blanketed more than a third of the red planet's surface, new research suggests.

    Now scientists have analyzed global databases of river valley networks on Mars, as well as deposits left behind by ancient deltas. Their research suggests 29 deltas they investigated -- more than half of all those in the databases -- sat at roughly the same height some 3.5 billion years ago, apparently ringing a vast ancient ocean shoreline in the northern lowlands of Mars.


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