巨大恆星列表

以下為已知體積最大的恆星列表，其排序比較的依據是太陽半徑（696,392公里）。然而已知恆星大小的確實排序尚未消楚，也尚未妥善定義。原因有： 雙星有時會分開處理，有時會被視為單一系統； 估計恆星大小，不同的測量法會得到不同的結果； 部份恆星的測量結果並不準確； 大部分恆星的距離未能確定，因此其大小亦未能確定； 大部分恆星均有大氣層，而這些大氣層會導致測量結果被高估； 有理論指出銀河系中並沒有半徑大於太陽1500倍的恆星； 一個關於麥哲倫雲的調查發現星雲共有44個半徑大於太陽700倍的紅巨星，這顯示還有很多巨大恆星未被發現。 次巨星是恒星光谱分类的一种，比一般的矮星明亮，但又没有达到真正巨星亮度，是他们的核心的氢的融合将要终止或已经终止的恒星。 巨星（Giant）是在一顆恆星在核心所有的氫都經由核融合耗盡後而變成的一類恆星。巨星的半徑是太陽的10倍至100倍，蒭藁增二、参宿七和老人星便是典型的巨星。 亮巨星（Bright giant）是介於超巨星和巨星之間的一類恆星。帝座便是一個例子。 超巨星（Supergiant）是巨大恆星中較大的一類恆星。這些恆星都是由一顆質量較高的恆星演變而成的。超巨星的壽命較為短暫，只有約一千萬至五千萬年。超巨星的半徑是太陽的30至500倍，部份接近1000倍。仙王座V354和仙王座μ便是典型的超巨星。 特超巨星（Hypergiant）是巨大恆星中最大的一類恆星，特超巨星的壽命非常短暫，只有約數百萬年。特超巨星的半徑超越太陽的1000倍以上。大犬座VY便是一個例子。 天文学主题 星座 恆星 恆星距離列表 恆星亮度列表 恆星光度列表 巨大質量恆星列表 TrES-4：已知的最大行星之一 Emily M. Levesque, Philip Massey, K. A. G. Olsen, Bertrand Plez, Georges Meynet, Andre Maeder. The Effective Temperatures and Physical Properties of Magellanic Cloud Red Supergiants: The Effects of Metallicity. The Astrophysical Journal. 2006, 645 (2): 1102 [2018-04-02]. 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YouTube上星體大小的比較影片 （页面存档备份，存于互联网档案馆） Google Video上星體大小的比較影片 （页面存档备份，存于互联网档案馆） 洛韋爾天文台Astronomers Identify Largest Stars Known 天文學家確定已知的三顆最大恆星 （页面存档备份，存于互联网档案馆）（BBC中文網2005年1月11日） 三顆最大恆星確認 （页面存档备份，存于互联网档案馆）（2005年1月12日Slashdot）