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Past Oceans on Mars? Maybe – Maybe Not

14 Aug 2012, 19:00 UTC
Past Oceans on Mars? Maybe – Maybe Not
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Did Mars once have oceans? Dueling theories provide conflicting pasts for the Red Planet. Image Credit: NASA / Goddard Space Flight Center The debate over the history of water on Mars first began even before the first spacecraft flew by the planet. But after Mariner 4 scientists learned that Mars was currently devoid of [...]

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