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Ceres (dwarf planet) - Wikipedia, the free encyclopedia
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日期:2024-07-12
Ceres (minor-planet designation 1 Ceres) /ˈsɪəriːz/ (SEER-eez)[18] is the largest object in the asteroid belt, which lies between the orbits of Mars and Jupiter. It is composed of rock and ice, is 950 km (590 mi) in diameter, containing a third of the mas...看更多