WASHINGTON, Dec 6: Images taken by Nasa’s Mars Global Surveyor spacecraft suggest the presence of liquid water on the Martian surface, a tantalising find for scientists wondering if the Red Planet ever has harboured life.
The orbiting US spacecraft allowed scientists to detect changes in the walls of two Martian craters that may have been caused by the recent flow of water, a team of researchers said in a paper appearing in the latest issue of the journal Science.
Scientists previously had established that two forms of water -- ice at the poles and water vapour -- exist on Mars, but liquid water is crucial to nurture life.—Reuters
