Cracking May Signal Past Water on Mars
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NASA's Mars rover Opportunity has found an unusual  pattern of cracking on a rock it discovered inside a Martian crater -- evidence, perhaps, that water may once have soaked parts of the crater bed, researchers said yesterday.
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More evidence of past water on Mars may help answer the questions &quot;How wet?&quot; and &quot;How long?&quot; At a news conference here at the fall meeting of the American Geophysical
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The hills of Mars have yielded fresh clues about how water shaped the Red Planet. Scientists at NASA&#39;s Jet Propulsion Laboratory in Pasadena, revealed that the robotic explorers Spirit and Opportunity each made discoveries which indicate that water has ...
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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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An orbiting spacecraft has sent back new evidence for the presence of water on Mars. Scientists long have debated whether water flowed on the red planet, with evidence increasing in recent years. The presence of water would raise the possibility of at least primitive life forms existing there.
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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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Mars shows signs of geologically recent volcanic activity, and scientists find to their surprise that there might well be another volcanic blast in the Red Planet&#39;s future.
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After months of crossing a vast Martian crater floor and zigzagging up low-slung hills, NASA&#39;s Spirit rover has spotted its first hint that water once coursed across the now-desert-like region, scientists said Wednesday.
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ith one Mars rover climbing into the hills and the other descending deep into a crater, scientists yesterday reported the discovery of several mysterious rock structures along with yet more signs that Mars was once awash in water.
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On one side of Mars, NASA&#39;s Spirit rover has found a mineral that solidly points to water activity. Meanwhile, the Opportunity rover has found confirmation
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NASA&#39;s Jet Propulsion Laboratory says the Mars rover Spirit has found a mineral linked to water during its exploration of the Red Planet.
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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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A provocative new study of photographs taken from orbit suggests that liquid water flowed on the surface of Mars as recently as several years ago, raising the possibility that the Red Planet could harbor an environment favorable to life.
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Curious deposits on Mars that originally appeared to be signs of an ancient ocean were instead produced by water emerging from underground, a new study finds.
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By ALICIA CHANG, THE ASSOCIATED PRESS  LOS ANGELES  A provocative new study of photographs taken from orbit suggests that liquid water flowed on the surface of Mars as recently as several years ago, raising the possibility that the Red Planet could harbor an environment favorable to life.
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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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NEW YORK With one Mars rover climbing into the hills and the other descending deep into a crater, scientists reported the discovery of several mysterious rock structures, along with yet more signs that Mars was once awash in water.