Mars is the fourth planet from the sun. It orbits the sun at a span of about 140 million miles. Looking up at Mars from Earth the planet Mars appears fiery red. The surface is almost exactly the same as the dry land on Earth. The time it takes Mars to rotate once on its axis is about half on hour longer than an Earth day. Phobos and Deimos are the names of the two moons
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Encarta 99, Microsoft Encarta Encyclopedia.
Encarta 98, Microsoft Encarta Encyclopedia.
Encarta 00, Microsoft Encarta Encyclopedia.
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