Lady’s Choice

Scientists prove it: a girl knows how to make up her mind. The image above shows the first target object – that football-sized layered rock – autonomously chosen by the Mars rover Opportunity on March 4. Opportunity selected the rock after taking a series of wide-angle panoramic images of the area and using her new…

Follow the Dotted Line

A dotted line marks the path of a large boulder that has bounced down the inner slope of this 1-km-wide crater in this image from the HiRISE camera, taken on November 12, 2006. The boulder can be seen where it came to rest among the sand dunes on the crater’s floor. See the original release…