NASA and university scientists reviewing data from the Mars Reconnaissance Orbiter (MRO) say evidence is growing that the planet harbored life in its past or that Martian microbes exist now.
They say their views are based on the growing body of data on the diversity of water related minerals discovered by MRO. It is also supported by findings from other spacecraft such as Europe's Mars Express orbiter and NASA's Phoenix lander and twin Mars rovers.
The MRO data is being used to narrow the best sites to locate life related evidence, while also being safe enough for the Mars Science Laboratory rover "Curiosity" set for launch in 2011.
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