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  1. ...thermonuclear fusion, and has cleared its neighbouring region of planetesimals Asteroids, also called minor planets or planetoids...

  2. ...thermonuclear fusion, and has cleared its neighbouring region of planetesimals .[1][2] The term planet is an ancient one having ties to...

  3. ...thermonuclear fusion, and has cleared its neighbouring region of planetesimals .[1][2] The term planet is an ancient one having ties...

  4. 一個星球,所界定的國際天文學聯合會(IAU),是一個天體繞恆星或恆星殘餘是巨大,足以圓其自身的重力,而不是大規模足以引起熱核聚變,並已清除周邊地區的星子。[1] [2] 行星一詞是一種古老的一個有聯繫的歷史,科學,神話和宗教。該行星最初被視為神聖的存在,作為神...