| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| Ganymede, in astronomy |
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(g n´ m d´´) (KEY) , in astronomy, one of the moons, or natural satellites, of Jupiter; the largest natural satellite in the solar system, it is larger than the planet Mercury. |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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