NASA has offered a sneak peek inside its Mars simulation habitat where four volunteers have now spent 150 days isolated from the outside world. By living within the confines of the 1,700-square-foot ...

There's more evidence that water once flowed on Mars with the discovery of an ancient river delta deep below the surface.

Multiple spacecraft and rovers have now detected what appears to be an extensive network of ancient river channels hidden beneath the Martian surface, buried under layers of lava and sediment that ...

New ground-penetrating radar scans by NASA's Perseverance Rover have revealed an ancient Martian river that may have hosted life.