NASA has revealed a major new discovery that could change how we understand Mars. Scientists are examining new evidence that may point to water and past conditions on the Red Planet. In this video we ...

Curiosity found organic molecules on Mars that were so compelling that scientists used a rare process to analyze them.

The Space Shuttle Discovery, one of the most flown orbiters in NASA history, is at the center of an escalating political fight over whether the spacecraft should be pulled from the Smithsonian’s ...