On January 25, 2004, NASA's Opportunity rover landed on Mars! This was the second of NASA's twin Mars Exploration Rovers to ...

NASA announced today that Mars, which scientists once thought of as a dry, dusty planet, is home to liquid water. That makes Mars an even better candidate for supporting alien—or, one day, human—life.

Searching for water on Mars often feels like chasing a flicker of hope in a cold and quiet world. You read about dried riverbeds, ancient lakes, and canyons carved by water that vanished long ago. So ...

Skylights, openings in the surface of Mars that descend down into caves, have been found on Mars, along with signatures for the presence of water ice. When you purchase through links on our site, we ...