NASA - National Aeronautics and Space Administration

Late-afternoon shadows add punch to a false-color vista of Endeavour Crater on Mars from NASA's Opportunity rover.

Engineers are installing the "nose cone" around NASA's NuSTAR, a black hole hunter. The mission is scheduled to launch no earlier than June 13.

A planet with a tail? NASA's Kepler mission has found evidence for what may be a disintegrating planet.