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天體

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文出維基大典
球狀星團
天體舉隅

可觀測之宇宙中,既經科學證實,確知其存在者,或物體、或結構,皆可謂之天體[]

天體分數類。一者,星體或類星體。若恆星行星彗星然,連結緊密。一者謂之結構,如星團星系,聯繫疏散。是結構也,或包含星體,或復有小結構焉。

引據

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  1. Naming Astronomical Objects - 存於2010-08-02自原本
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