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Last updated on April 16, 2014 at 8:29 EDT

Moon Reference Libraries

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Earths Moon
2004-10-19 04:45:40

The Moon -- natural satellite of a planet, in particular, the single natural satellite of the earth. The Earth-Moon System The moon is the earth's nearest neighbor in space. In addition to its proximity, the moon is also exceptional in that it is quite massive compared to the earth itself, the ratio of their masses being far larger than the similar ratios of other natural satellites...