| Jupiter
as a miniature solar system |
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| • | Four
large moons (Io, Europa, Ganymede, Callisto) |
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| • | Regular
(equatorial, circular) orbits |
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| • | Pattern
of changing density and composition with distance |
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| – | Inner
two (Io, Europa) mostly rocky |
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| – | Outer
two (Ganymede, Callisto) more icy |
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