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_Astronomy版 - Astronomy Picture of Day: Cocoon Nebula
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发帖数: 1994
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IC 5146: The Cocoon Nebula
Credit & Copyright: Jean-Charles Cuillandre (CFHT), Hawaiian Starlight, CFHT
Explanation: How did this nebula get created? The Cocoon Nebula, cataloged as IC 5146, is
a strikingly beautiful nebula located about 4,000 light years away toward the constellation of
Cygnus. Inside the Cocoon is a newly developing open cluster of stars. Like other stellar
nurseries, the Cocoon Nebula is, at the same time, an emission nebula, a reflection nebula,
and an absorption nebula.
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