英语词汇“hill sphere”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	hill sphere
释义	Hill sphere Hill sphere The spherical region around a planet (or satellite) within which that body dominates the motion of particles. Once the core of a planet exceeds a mass of about 10²³ kg, it gravitationally attracts gas from the Hill sphere and is able to form an atmosphere in this way. Jupiter's Hill sphere, for example, had a volume about 1000 times greater than that of the Earth.
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Hill sphere