IC 1396 vs RCW 147
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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 147
RCW 147, widely known as the Trifid Nebula or Messier 20, is a star-forming region located in the constellation Sagittarius. Discovered by French astronomer Charles Messier in 1761, the cosmic object is distinguished by its unique combination of an emission nebula, a reflection nebula, and an absorption dark nebula. Its name derives from the dark dust lanes that divide its bright central core into...
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