WIRED Space Photo of the Day: Ancient Planetary Nebula
 

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This image was obtained with the wide-field view of the Mosaic camera on the Mayall 4-meter telescope at Kitt Peak National Observatory. Abell 74 is an ancient planetary nebula. Because of its age it is a very faint target. Ancient ...http://feeds.wired.com/c/35185/f/661...a/sc/10/mf.gif
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