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Southern Owl Nebula : ウィキペディア英語版 | Southern Owl Nebula The Southern Owl Nebula (PLN 283+25.1, ESO 378-1) is a planetary nebula located in the constellation Hydra. It is named so because of its resemblance to the Owl Nebula in Ursa Major. The nebula is notably symmetric, round, and has a diameter of approximately four light-years across. == References == 〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Southern Owl Nebula」の詳細全文を読む
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