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Mars: our nearest neighbor

Mars is the fourth planet from the sun. It has a thin atmosphere and possibly a polar ice cap as well. It has about half the diameter of Earth. Edited by Ashraf

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Uploaded by: ( Send Message ) on 10-06-2009. Dnatube suggest users to have interest in drug testing, mesothelioma, insurance, medical lawyers.

Duration: 1m 35s

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