IC 1396 vs RCW 57
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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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RCW 57
RCW 57 is an H II region and bright nebula complex located in the constellation Carina, designated as NGC 3576 in the New General Catalogue. It was discovered by the English astronomer John Herschel in 1834. The complex is an active star-forming region located approximately 6,500 light-years from Earth and is composed of dense clouds of ionized gas and dust, which emit brightly in infrared wavelen...
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