NASA - National Aeronautics and Space Administration

NASA's senior Mars rover, Opportunity, is driving to a new study area after a dramatic finish to 20 months on "Cape York" with examination of a rock intensely altered by water.

This ring of fire "burns, burns, burns" with young stars.

A new study of glaciers worldwide from two NASA satellites has helped resolve differences in estimates of how fast glaciers are disappearing and contributing to sea level rise.