MARS - MARS Motions orbit:...

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MARS Motions orbit: orbital period = 687 days (about 2 years) elongated elliptical orbit rotation: rotation period = 24.5 hours tilt of axis = 25 degrees o seasons ? both of these are similar to Earth Interior observe NO magnetic field since it rotates quickly, there must be NO liquid inside consistent with small size (and fast cooling rate) Mars is less differentiated => was not molten for very long some evidence for past seismic activity and past volcanoes Surface Observe: plains (40 %) o mainly northern hemisphere rough areas with craters (60%) o mainly southern hemisphere Interesting features (within these regions):  
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Polar caps o frozen carbon dioxide (dry ice) on top of water ice o some melting in summers caps visibly change appearance o Figure 8.17 shows the polar caps.  [Link to Figure 8.17] Valles Marineris o deep canyon o length: New York City to Los Angeles o
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This note was uploaded on 03/09/2012 for the course AST 1002 taught by Professor Emilyhoward during the Spring '10 term at Broward College.

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MARS - MARS Motions orbit:...

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