Twinkle, twinkle little star, how I wonder what you are. Or are you a star? Perhaps you're a gargantuan galaxy, capricious globular cluster or a burgeoning supernova. When I'm not sure what's attracting my fancy late at night, then I can use Neil Bone's, <em><a href="http://www.amazon.com/exec/obidos/ASIN/1554070244/universetoday/">Deep Sky Observer's Guide</a></em> to aid in identifying jewel-like sparkles in the sky so high.
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