'Water is Currently Flowing on Mars' (NASA)(NO BS)

(Breaking News) 'Water is Currently Flowing on Mars' (NASA)(NO BS)
The image on the right shows a gully in a crater formed after the photo on the left was taken in 1999
New photographs taken of Mars suggest that water occasionally flows across the surface of the planet.
The images, taken by Nasa's Mars Global Surveyor, show changes in craters that provide the strongest evidence yet that water flowed through them as recently as several years ago.
Michael Mayer, head of Nasa's Washington-based Mars Exploration Programme, said: "These observations give the strongest evidence to date that water still flows occasionally on the surface of Mars."
The photographs show finger-shaped gullies several hundred metres long in the sides of craters.
Michael Malin, the lead researcher in the study of pictures taken by the US National Aeronautics and Space Administration's Mars Global Surveyor in 2004 and 2005, said the photos are "what you would expect to see if the material were carried by flowing water".
Search for life
The surface of Mars is too cold for liquid water to exist, but scientists believe underground water filtered to the surface carrying debris downslope long enough to form the gullies before it froze.
"This underscores the importance of searching for life on Mars, either present or past."
Bruce Jakosky, an astrobiologist at the University of Colorado at Boulder
During its Mars exploration missions, Nasa has pursued a "follow the water" strategy to determine if the planet once contained life or could support it now.
Scientists believe ancient Mars was awash with pools of water and researchers have spotted evidence of water ice at the planet's North Pole.
"This underscores the importance of searching for life on Mars, either present or past," Bruce Jakosky, an astrobiologist at the University of Colorado at Boulder, who had no role in the study, said. "It's one more reason to think that life could be there."
Some scientists have said the gullies could have been created by liquid carbon dioxide (CO2) coming to the surface, but Nasa experts say this is unlikely.
Others say materials such as sand or dust can flow like a liquid and produce similar results.
Allan Treiman, a geologist at the Lunar and Planetary Institute in Houston, said in an email to the Associated Press news agency: "Nothing in the images, no matter how cool they are, proves that the flows were wet, or that they were anything more exciting than avalanches of sand and dust."
The Mars Global Surveyor orbiter has taken 240,000 pictures of the surface of Mars since 1997 but the agency lost contact with the spacecraft in November.