9.19.05 - MARS Mars Announcements Explorations Assignments...

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September 19, 2005 – MARS Mars Polar Caps Light/dark marks on surface that changed with season Seasons Light & dark stuff – light and dark dust and sand Mars is cold and dry and desolate BUT in the past is was different, o Pictures show evidence that there were once rivers there and it was warm o Also show sedimentary rocks with layers & clastic rocks
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Unformatted text preview: o And rocks that were lava o And rocks (goethite) that cannot form without water. o Concretions • Habitable environment must have: o Metabolic energy source (e.g sunlight, thermal vents) o SCHNOPP – These biogenical elements o Liquid water • The Rover Announcements: • Explorations Assignments this week! •...
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  • Summer '07
  • GILBERT,C.
  • Sedimentary rocks, Clastic Rocks, metabolic energy source

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