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7 years ago
What is the relationship between the Kirkwood gaps in the asteroid belt and the Cassini division in the rings of Saturn?
A)   Both are caused by large objects passing through swarms of smaller objects, sweeping out gaps in the swarms.
B)   Both were discovered by observers from the same group; Kirkwood and Cassini both worked at the same observatory.
C)   Both are caused by disruptions of the orbits of small objects by larger planets or moons. In both cases, the orbital distance of small objects in the gaps is related by simple fractions to the orbital distance to the disturbing object.
D)   Both are caused by disruptions of the orbits of small objects by larger planets or moons. In both cases, the periods of the small objects are simple fractions of those of the larger disturbing object.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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7 years ago
Grinning Face Exactly what I needed
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