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NGC 2170 is a reflection nebula in the constellation Monoceros. It was discovered on October 16, 1784 by William Herschel.〔 == External links == * (Astronomy Picture of the Day - NGC 2170: Celestial Still Life ) * (The Interactive NGC Catalog Online: NGC 2170 ) * (SIMBAD: NGC 2170 ) * (NASA/IPAC Extragalactic Database: NGC 2170 ) 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 2170」の詳細全文を読む スポンサード リンク
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