Scientists may have figured out how Mars hung onto its surface liquid water in its ancient history via alternating periods of ...

The Wolf Moon will reach its peak fullness at 5:27 p.m. Eastern Time on January 13. It will rise in the sky about an hour ...

Mars haunts us as a vision of a planet gone wrong. It was once warm and wet, with rivers flowing across its surface and ...

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

Ancient ripples suggest a warmer, wetter past for the Red Planet that supported open water on its surface.

over Mars. Illustration: NASA/ESA/JPL-Caltech/GSFC Check, check—is this thing on? NASA officials will announce an update on the Mars Sample Return mission tomorrow afternoon, providing some ...