NASA scientists on Thursday said that its Mars Reconnaissance Orbiter has discovered the first evident of flowing water on the ground of Mars. “We have found repeated and predictable evidence suggesting water flowing on Mars,” Michael Meyer, lead scientist for the Mars Exploration program, told reporters. According to the US space agency, the orbiter, which has been monitoring Mars since 2006, discovered several instances of water flows during the Martian spring and summer. “The best explanation we have for these observations so far is flow of briny water, although this study does not prove that,” said Alfred McEwen of the University of Arizona's Lunar and Planetary Laboratory. “It's a mystery now, but I think it's a solvable mystery with further observations and experiments,” said McEwen, lead author of a study explaining the findings in the journal Science. BM