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Night Sky Guide – Tonight’s Sky, Highlights of the December Night Sky

30 Nov 2017, 17:35 UTC
Night Sky Guide – Tonight’s Sky, Highlights of the December Night Sky
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Night Sky Guide December 2017
Your guide to constellations, deep-sky objects, planets, and events. Tonight’s Sky, highlights of the December Night Sky.
Constellations and Deep-Sky Objects
Two prominent constellations in the December night sky represent notable individuals of ancient Greek mythology. The great hero Perseus holds the head of Medusa the Gorgon.
Located in Perseus is M34, an open star cluster about 1,400 light-years away from us. Open star clusters are groups of young stars that all formed at the same time within a large cloud of dust and gas. Look for it with the naked eye or with binoculars in a dark sky.
Queen Cassiopeia was punished for her conceit and vanity by being tied to her throne. Cassiopeia’s “M” or “W” shape makes this constellation easy to identify.
Eta Cassiopeiae is a wonderful and colorful double star. Use binoculars or a small telescope to discern its gold and blue hues.
M103 in Cassiopeia is a fine open star cluster with a prominent red star near the center. Its fan shape is evident in binoculars.
Lying between Cassiopeia and Perseus is the lovely Double Cluster. This pair of open star clusters is easy to see with binoculars. The Double ...

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