Mars rover finds evidence that Red Planet could once have supported life

Mars rover Opportunity has found evidence that the Red Planet was once wet enough for life to exist there, but the robot has not found any direct traces of living organisms, NASA scientists announced Tuesday.

"Opportunity has landed in an area of Mars where liquid water once drenched the surface," said Edward Weiler, associate NASA administrator for space science, at a news conference. "This area would have been a good, habitable environment."

Space.com - Water Once Filled Mars Opportunity Rover Landing Site Sky Map to see Mars now.