Mars is the fourth planet in the solar system and it is a rock planet. Mars is named the “red planet” due to its red appearance, which is caused by iron oxide prevalent on its surface. Mars is a terrestrial planet with a thin atmosphere. Mars has the highest known mountain in the solar system. It has some liquid surfaces. Mars has 2 moons, Phobos and Deimos. Mars has approximately half the radius of earth.
Wednesday, November 25, 2009
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