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The Eagle and The Swan #nasa #apod #eaglenebula #m16 #swannebula #m17 #nebula #nebulae #stars #gas #dust #milkyway #galaxy #interstellar #universe #hubblespacetelescope #space #science #astronomy
alexob: The Blue Green SwanNebula M17 in the light of Ionised Sulphur, Hydrogen and Oxygen
