Modern art or windy Mars?
A piece of Mars: Is it modern art? Well maybe it looks like it from a distance. Up close, this is reality on Mars. These are dark dunes in the southern hemisphere, awaking from a long hibernation beneath bright winter frost (a touch of which can still be seen in white patches). The wind has begun to shape the dunes, leaving crayon streaks where dust devils have swept by. Maybe we’ll see those little ripples move this summer. (HiRISE ESP_030602_1080, NASA/JPL/University of Arizona)