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Mars
May
16
2011
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Answer #1
Also called Red Planet . Revolution : 687 days .
Rotation : 24.6 hours ( almost equal to earth.)
It has a thin atmosphere comprising of nitrogen and argon .
It is marked with dormant volcanoes and deep chasms where once water flowed recent explorations have thrown light on the possibilities of existence of life here. The highest mountain here is named Nix Olympia . which is three times higher than Mount Everest .