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NGC 54 is an edge-on spiral galaxy in the constellation of Cetus. The galaxy was discovered by Wilhelm Tempel in 1886, and he defined it as "very faint, pretty small, round."〔 The galaxy is 90,000 light years in diameter,〔 making it slightly smaller than the Milky Way. ==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 54」の詳細全文を読む スポンサード リンク
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