NASA: Signs of liquid water found on surface of Mars
Thursday, December 7, 2006 NASA scientists have announced that the Mars Global Surveyor has captured images of deposits in gullies on the surface of the planet Mars which have been created since the areas were photographed seven years ago. These deposits are believed to be the residue of liquid water breaking out of cliffs and crater walls, carrying sediment downhill through the gullies, and later evaporating. The gullies are located inside the Terra Sirenum crater…