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Jupiter
Composition
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Jupiter's average density
is 1330 kg/m3
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Rock density is 3000 kg/m3
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Jupiter can't have much rock
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Jupiter is not round
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oblate
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equatorial diameter 6.5%
larger than polar diameter
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Differential rotation: can't
be a solid body
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Jupiter has some rocky core
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Saturn probably has a smaller
core
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Jupiter is mostly gas
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hydrogen and helium
in same proportions as Sun
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formed at the same time as
the Sun
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Weight of gas in central
regions is HUGE
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rocky core may be compressed
to 20,000 kg/m3
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80 million atmospheres
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liquid metallic hydrogen
surrounds core
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unusual conductive form of
hydrogen
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caused by high pressure and
temperature
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