New Mars data gives life clue
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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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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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WASHINGTON --      A pair of NASA scientists told a group of space officials at a private meeting      here Sunday that they have found strong evidence that life may exist today      on Mars, hidden away in caves and sustained by pockets of water.
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NASA&#39;s Mars rover Opportunity found evidence for a lake or sea on Mars, and new research suggests the body of water was deep, large and long-lasting.
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NASA&#39;s Mars rovers have uncovered more tantalizing evidence of a watery past on the Red Planet, scientists said Wednesday. And the rovers, Spirit and Opportunity, are continuing to do their jobs months after they were expected to ...
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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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NASA's Mars Reconnaissance Orbiter spacecraft this month is set to surpass the record for the most science data returned by any Mars spacecraft.
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Almost by accident, NASA&#39;s Mars rover Opportunity has found a rock that may point to a second water event in the red planet&#39;s past.
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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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By JOHN JOHNSON JR.  NASA scientists announced Wednesday that they had found evidence that water still flows over the surface of Mars - sporadic gushers that increase the possibility that the Red Planet could harbor some form of 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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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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A frozen sea found on Mars is one of the most promising places to look for life on the Red Planet, scientists say.
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Almost by accident, NASA's Mars rover Opportunity has found a rock that may point to a second water event in the red planet's past.
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The European Space Agency says data collected by its probe, Mars Express, has provided new evidence in the search for life on Mars.
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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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New methane readings from a space probe raise the possibility that microbial life could exist on Mars. Some scientists, though, remain skeptical.