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physical object > natural object > celestial body > nebula > H II region > gaseous nebula > Eagle Nebula
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Eagle Nebula comparison table
Subject is a kind of is an instance of has synonym has image has definition has distance
gaseous nebulaH II region emission nebula An H II region, a supernova remnant, or a planetary nebula. H II regions have an emission-line optical spectrum, and a thermal continuous spectrum declining in intensity as the wavelength increases (from maximum in the ultraviolet) through infrared and radio. Supernova remnants have an emission-line optical spectrum and a nonthermal radio spectrum. Temperatures of planetary nebulae are much higher than those of H II regions. 
Eagle Nebula gaseous nebulaIC 4703 7000 light years

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