THEMIS Image of the Day, December 12, 2016. Today’s VIS image shows some of the numerous dark linear streaks on the floor of Gusev Crater. These streaks are formed by wind action. The dark streaks are where dust devils have removed the surface dust, revealing the darker rock beneath. Gusev Crater is the home of the MER Spirit lander.
More THEMIS Images of the Day by geological topic.