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Astronomy版 - Astronomy Picture of Day: Rosette Nebula
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发帖数: 1994
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The Rosette Nebula
Credit & Copyright: Richard Crisp (narrowbandimaging.com)
Explanation: Would the Rosette Nebula by any other name look as sweet? The bland New General Catalog designation of NGC 2237 doesn't appear to diminish the appearance of the this flowery emission nebula. Inside the nebula lies an open cluster of bright
young stars designated NGC 2244. These stars formed about four million years ago from the nebular material and their stellar winds are clearing a hole in the nebula's cen
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话题: nebula话题: rosette话题: astronomy话题: picture话题: day