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NGC 5584 is a spiral galaxy, more than 50,000 light-years across, that resides 72 million light-years away in the constellation Virgo. The blue areas the Hubble Space Telescope image are young stars, the darker areas are dust lanes, while the reddish spots and splotches are galaxies in the background.〔(【引用サイトリンク】url=http://heritage.stsci.edu/2011/08/caption.html )〕 250 Cepheid variables have been observed in NGC 5584. The image is a composite of several exposures taken in visible light between January and April 2010 with Hubble's Wide Field Camera 3. == External links == * (Spiral Key to Universe's Expansion ): 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 5584」の詳細全文を読む スポンサード リンク
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