ESP_035909_1775_0.42xA piece of Mars: This shows the location of the rover Opportunity as of late March, 2014. It’s been trolling around the rim of Endeavour crater. Just inside the crater, there are some large ripples (the biggest is ~10 m wide) that have formed from erosional scours in dark sediments on the crater interior walls. The rover won’t ever go over there, but maybe it will climb to the other side of the rim and take some nice images of them. (HiRISE ESP_035909_1775, NASA/JPL/Univ. of Arizona)

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