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NGC 3949 is an unbarred spiral galaxy in the constellation Ursa Major. It is believed to be approximately 50 million light-years away from the Earth. ==Supernova== The type II supernova SN 2000db is the only supernova that has been observed within NGC 3949.〔(【引用サイトリンク】 work=Results for NGC 3949 )〕 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 3949」の詳細全文を読む スポンサード リンク
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