| http://www.w3.org/ns/prov#value | - The ice mantle is not in fact composed of ice in the conventional sense, but of a hot and dense fluid consisting of water, ammonia and other volatiles.[11][58] This fluid, which has a high electrical conductivity, is sometimes called a water???ammonia ocean.[59] The bulk compositions of Uranus and Neptune are very different from those of Jupiter and Saturn, with ice dominating over gases, hence ju
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