Ancient and slightly less ancient
Little dunes that Curiosity saw last October
January 24, 2014Yes, this is a bit of windy Mars. Really.
February 10, 2014
A piece of Mars: Here are two craters, each of which is ~240 m across. On the right is an old, very eroded crater. It has old, eroded ripples on its floor. The crater on the left is younger, with a mostly intact rim and even ejecta surrounding it. The ripples inside this crater are also younger: more crisp, and less broken-up. (HiRISE ESP_034482_1570, NASA/JPL/Univ. of Arizona)
