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Message * Articles On Sharpless Objects, including Crab Nebula, Rosette Nebula, Eagle Nebula, Ngc 281, Lagoon Nebula, Omega Nebula, Crescent Nebula, Barnard's Loop, California Nebula, Ngc 6302, Ic 443, Flame Nebula, Medusa Nebula, Ngc 7538 - 1242773002 - 9781242773006