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Rosette Nebula. Emission nebula 5000 light years away in Monoceros. NGC 2244 open star cluster in center of Rosette bombard surrounding nebulosity, ionizing hydrogen atoms and causing the strong red glow.
Rosette Nebula. Emission nebula 5000 light years away in Monoceros. NGC 2244 open star cluster in center of Rosette bombard surrounding nebulosity, ionizing hydrogen atoms and causing the strong red glow.