Mars Orbiter Catches a Crater Full of Cracks

In a decidedly wintry-looking scene, frost-filled fractures fills a crater near the north pole of Mars -- as observed by NASA's Mars Reconnaissance Orbiter.

December 31, 2015
7:00 AM EST
Polygonal terrain within and around a polar crater on Mars (monochrome red-filter HiRISE image.) | NASA/JPL-Caltech/University of Arizona