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Monday, May 5, 2008

The Inner Planets

The Inner Planets are the four planets that are nearest to the sun. Namely, Mercury, Venus, Earth, and Mars. They are basically different from sun considering that they are made of rock.

The planets farther away from the sun are mostly composed of gas. Each of the inner planets has an atmosphere. Though the atmosphere of the other inner planets are very thin and would be poisonous to humans.

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