Hope for Water on Mars Dims with Sharp New Images
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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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NASA experts said they have detected evidence that liquid water existed on the surface of Mars in recent years, giving weight to hopes that signs of life on the Red Planet could still be found.
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Researchers can now say definitively that Mars once  supported a watery environment, but whether the red planet could have ever  supported life is still far from certain.
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The Mars Reconaissance Orbiter sends back images supporting theories that water once existed  -  or could still exist  -  on the red planet
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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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Photographs taken by a spacecraft orbiting Mars indicate that active volcanoes may still exist on the red planet, further eroding its image as a dead world and offering prime sites to prospect for signs of Martian life.
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Mars rovers have found new evidence that water was once plentiful in the hills and plains of the now-barren Red Planet. After discovering the plains where it landed was once a
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NASA&#39;s Mars rover, Opportunity, has discovered more evidence that water may have flowed over rocks on the Red Planet. Data sent back by Opportunity suggests an area known as the Meridiani Planum, was drenched
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New data showing overlap in patterns of water and methane in Mars' atmosphere may have implications for the idea that life exists there.
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The quest to find traces of life on Mars looks gloomy after Nasa says the Red Planet was 'too salty'.
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BEIJING, Aug. 19 (Xinhuanet) -- NASA&#39;s Mars rovers have uncovered more clues about how water shaped the Red Planet, scientists said Wednesday.
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LOS ANGELES - NASA&#39;s Mars rover, Opportunity, has found more signs that rocks on the Red Planet were once submerged in water. Data sent by Opportunity suggest a crater was drenched a second time after drying out, scientists said.
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More than 30 years ago, when NASAâs two Viking landers looked for signs of life on Mars, the results were ambiguous.
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JACKSON HOLE, Wyoming -- There is mounting evidence of the role of water  in Mars' evolution. That fact appears to have been favorable to the  development of life -- and the leftover calling card of past biology may be  preserved in that world's geologic record.
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Sniffing out any whiff of biology on Mars has become a scientific battle of the bands - spectral bands that is. The purported detection of methane in the martian atmosphere by Mars Express, the European
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During the last four weeks, the Mars Exploration Rovers have braved the Martian winter to continue their geologic field work, sending home more evidence of past liquid water on the Red Planet and images of bizarre geologic formations the likes ...