In False Color
This picture is colored based on the type of gas that is glowing: Hydrogen (Hα) is green, Oxygen (O III) is blue, and Sulfer (S II) is red.
Credit:
T.A.Rector (NRAO/AUI/NSF and NOAO/AURA/NSF) and B.A.Wolpa (NOAO/AURA/NSF)
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