Dione (English spelling)
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Saturn's moon. Discovered by G. Cassini in 1684. With a diameter of 1,120 km and a density of 1.4, it is thought to be made of rock and water. Exploration by Voyager 1 and 2 revealed that this moon also has many craters. Another moon, Dione B (1980S6), has also been discovered, which follows almost the same orbit as Dione. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
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土星の衛星。 1684年に G.カッシーニが発見した。直径 1120km，密度 1.4で，岩石と水からできていると思われる。ボイジャー1，2号による探査により，この衛星にも多数のクレータのあることがわかった。ディオーネとほとんど同じ軌道をとるディオーネB (1980S6) という衛星もみつかっている。
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