University of Hawaii astronomers have measured the diameter of
Comet 17P/Holmes: 1.4 million kilometers. This makes the exploding comet bigger than the sun and now the largest object in the solar system. Not surprisingly, the comet is visible to the naked eye; with only a backyard telescope you can watch its gigantic debris cloud expand from night to night.
Nov. 19th is an especially good night to look: Comet Holmes will glide by Mirfak, the brightest star in the constellation Perseus, and appear to swallow it. Visit
http://spaceweather.com for a sky map and images.
UPDATE
Holmes is still visible to the naked eye as a fuzzy star low above the northern horizon between 1-2 am (daylight saving.
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