Mars' wet past possible best evidence
A patch of Martian soil analyzed by NASA's rover Spirit is so rich in silica that it may provide some of the strongest evidence yet that ancient Mars was much wetter than it is now. The processes that could have produced such a concentrated deposit of silica require the presence of water ...
http://www.astronomy.com/asy/default.aspx?c=a&id=5571
Students will:
(1) Compare the climates and atmosphere compared to Earth
(2) Will compare this deposit to cave deposites, events and cave structures
(3) will look at crytals and how they form
Friday, May 25, 2007
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