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NGC 922 is a barred spiral galaxy located 150 million light years away from the Earth. The ring structure and the galaxy’s distorted spiral shape result from a smaller galaxy hitting the centre of NGC 922 some 330 million years ago.〔 ==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 922」の詳細全文を読む スポンサード リンク
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