New evidence of a wet Mars
Rover finds signs of water in Martian rocks
By Stephen Ornes, 09:34 AM February 11, 2014
Ten years ago, a golf-cart-sized science lab on wheels started to roll across the surface of Mars. Within three months of landing, this Opportunity rover found signs that water had once pooled on the Red Planet. Fast forward to 2014, and the rover is still going strong. And it’s still finding evidence that water flowed on Mars — but not recently. The traces Opportunity has just found suggest that water might have existed some 4 billion years ago.
That water would not have been overly salty or...
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