Water Once Filled Mars Opportunity Rover Landing Site

NASA scientists have found enough evidence of water on Mars to believe that the area around the Opportunity rover was once awash with the wet resource. The rover’s Meridiani Planum landing site shows tell-tale signs that water once covered the area, then gradually evaporated away. In a much-anticipated press conference from NASA Headquarters in Washington, D.C., scientists said that body of water might have once been the size of one of Earth’s Great Lakes.