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Science-Related Homework Help Physics Topic started by: barry on Jul 30, 2013



Title: What is the evidence that suggests the past and present existence of surface wat
Post by: barry on Jul 30, 2013
What is the evidence that suggests the past and present existence of surface water on Mars?


Title: Re: What is the evidence that suggests the past and present existence of surface wat
Post by: nite_n_day on Jul 30, 2013
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.


Title: Re: What is the evidence that suggests the past and present existence of surface wat
Post by: barry on Jul 30, 2013
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