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NGC 634
NGC 634 is a spiral galaxy, lying 250 million light years away in the Triangulum constellation. This spiral galaxy was discovered back in the nineteenth century by French astronomer Édouard Stephan, but in 2008 it became a prime target for observations thanks to the violent demise of a white dwarf star. == External links ==
* (A Perfect Spiral with an Explosive Secret ): ESA/Hubble Picture of the week.
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 634」の詳細全文を読む
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