Emission Nebula NGC 281
NGC 281, an emission nebula and open cluster in the constellation Cassiopeia. The H II region NGC 281 (also known as Sharpless 184) is a classic star forming complex consisting of an ionization front formed on the edge of a molecular cloud, and illuminated by its progeny of young stars. The complex is located in the Perseus arm of our galaxy and its visible structure spans some 60 light years.
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Photo credit: © Robert Gendler/Stocktrek Images / Alamy / Afripics
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