Opportunity Rover Sees Variable Environmental History at Martian Victoria Crater

(PhysOrg.com) -- One of NASA's two Mars rovers has recorded a compelling saga of environmental changes that occurred over billions of years at a Martian crater.

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<p><a href="http://www.physorg.com/news162139346.html">Opportunity Rover Sees Variable Environmental History at Martian Victoria Crater</a></p> <p>(PhysOrg.com) -- One of NASA's two Mars rovers has recorded a compelling saga of environmental changes that occurred over billions of years at a Martian crater. </p>