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NGC 73 is a spiral galaxy estimated to be about 350 million light-years away in the constellation of Cetus. It was discovered by Lewis Swift in 1886 and its magnitude is 13.7. ==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「NGC 73」の詳細全文を読む スポンサード リンク
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