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Home Q & A Board Science-Related Homework Help Physics
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barry barry
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11 years ago
What is the evidence that suggests the past and present existence of surface water on Mars?
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11 years ago
Runoff channels from old rivers and outflow channels from catastrophic flooding in the distant past.  Recent mudflows down the sides of some canyons and crater walls suggest occasional eruptions of liquid water persist to this day, as imaged by the Global Surveyor.  The Rovers in 2004 also found clear evidence of sedimentary rocks formed under water at both the landing sites, on opposite sides of the globe.
Would you know my name, if I saw you in heaven?

Eric Clapton
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barry Authorbarry
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11 years ago
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