Four fresh impact craters were recently spotted scarring Mars' volcanic
plains.
The new pockmarks were first noticed in August 2010, when the Mars
Reconnaissance Orbiter's low-res, grayscale Context camera saw a dark
patch that hadn't been there two years before.
Such new spots often come from impact craters left by meteorites. To
confirm that, MRO's sharp-eyed HiRISE camera went in for a closer look.
While the Context camera takes wide-angles miles across, HiRISE zooms in
to resolve objects the size of a beach ball.
Read more:
http://snipr.com/27t4fu_
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