Life could exist below Mars surface, scientist says here
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Despite four decades of trying and some 40 space probes, the question of whether there&#39;s life on Mars remains as elusive as ever.
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ROBERT ZUBRIN: First for the science, second for the challenge, and third for the future. First, for science. Mars is the key to letting us know if life is a general phenomenon in the universe.
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Concentrations of water vapor and methane gas in certain regions of the red planet strengthen speculation that Mars could be a haven for microbial life.
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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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Scientists analysing data from the Mars exploration Rover missions believe water was involved in the formation of rocks on the planet.
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com. 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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The European Space Agency(ESA) says it has found concentrations of water vapour and the gas methane in the same places on Mars, which strengthen speculation that the Red Planet could be a haven for microbial life.
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After studying thousands of images from Mars, scientists now are convinced that liquid water once flowed on the surface of the red planet, increasing the odds that life may have existed there in the distant past.
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A controversial new study suggests Mars had an acidic ocean. The strange brew spiked with sulfates and iron could still have harbored life, scientists say.
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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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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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Scientists say there is no doubt that abundant water once soaked Mars. Now the big question is whether the red planet ever supported life. Some experts say the early signs are promising.
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A remote Mars life-detection strategy is being tested in the fjords of Scandanavia, with a goal of eventually identifying even a single biological cell hiding in the rugged landscape.
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Findings in the Martian atmosphere by the European Mars Express spacecraft orbiting the red planet correspond to areas where the US Mars Odyssey spacecraft has detected possible water ice just beneath the surface.
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Preparations are on track for the launch of a new NASA Mars  lander early next month to search for subsurface water and potential life in the red planet&#39;s arctic northern  region.
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It&#39;s the discovery by two Mars rovers that the Red Planet once had water and possibly could have supported life. That recognition comes today from the journal Science.
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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.