IC 1396 vs NGC 281
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IC 1396
IC 1396 is a large emission nebula and H II region in the constellation Cepheus, located approximately 2,400 light-years from Earth. It is a site of active star formation containing several bright-rimmed globules, the most prominent being the Elephant Trunk Nebula, a dark column of gas and dust designated IC 1396A. The nebula is ionized primarily by radiation from HD 206267, a massive star within...
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NGC 281
NGC 281 is an emission nebula and active star-forming region in the constellation Cassiopeia, commonly called the Pacman Nebula because of its appearance in some images. It is associated with the young open cluster IC 1590, whose hot stars ionize surrounding hydrogen gas and make it glow. The region also contains dark dust lanes and dense globules where continuing stellar formation can be studied.
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