Bedrock in Mars' Gusev Crater Hints at Watery Past
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Now that NASA's Mars Exploration Rover Spirit is finally examining bedrock in the "Columbia Hills," it is finding evidence that water thoroughly altered some rocks in Mars' Gusev Crater.
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By Mark K. Matthews The Orlando Sentinel  ORLANDO, Fla. (MCT) -- Recent changes on the surface of Mars resemble the effects of a flash flood, researchers said Wednesday, raising the likelihood that there is water bubbling up to the surface of the red planet.
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LOS ANGELES - NASA&#39;s Spirit rover has found more evidence of past water on the hills of Mars, while its twin, Opportunity, has observed a field of dunes inside a crater.
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NASA released images today that reveal water likely flowed through Martian gullies within the past few years, providing a "squirting gun" of liquid water's presence on the red planet.
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NASA&#39;s Mars rovers have returned new evidence for past water, pictures of Earthlike clouds seen for the first time from the planet&#39;s surface, and a rock that doesn&#39;t look like anything scientists have ever seen.
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Mars rover Spirit has found its own compelling evidence that liquid water flowed at its landing site on the Red Planet.
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NASA to allocate wellies budget? Pictures taken two years ago by Mars rover Opportunity might show puddles of liquid water on the Martian surface, according to New Scientist.â¦
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The Mars Opportunity site continues to intrigue scientists as they decipher the chemistry deeper in Endurance crater. The rise in chlorine and fall in sulfur may suggest alterations by evaporating water in the crater's past.
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Before its death, Mars Global Surveyor captures images of  water flowing on the surface of the red planet. In Gear Factor.
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The Mars rover Opportunity has found new evidence of past existence of water on the Red Planet, NASA said. Opportunity keeps finding new clues of past water as it continues probing Mars, said mission scientists
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The discovery of Mars&#39; watery past by NASA&#39;s Spirit and Opportunity rovers has been chosen as the key scientific advance of 2004 in an annual list compiled by Science magazine.
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Stunning color images offer new evidence that plentiful water once percolated through Martian bedrock&#8212;and new hints as to where life might be hiding.
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Mars is showing scientists its older, craggier face buried beneath the surface, thanks to a pioneering sounding radar co-sponsored by NASA aboard the European Space Agency's Mars Express orbiter.
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Water once covered thousands of square miles of Mars, creating an ancient environment that hints at the possibility that life might be present there yet today, scientists reported.
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New images obtained by a sharp-eyed Martian satellite reveal that some Red Planet features once thought to have been carved by flowing water were in fact created by other processes.
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Images taken by NASA's Mars Global  Surveyor spacecraft suggest the presence of liquid water on the  Martian surface, a tantalizing find for scientists wondering if  the Red Planet ever has harbored life.
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US scientists have found new data showing patterns of water and methane on Mars could improve the chances life once existed there.