The bright nebula below the photo is the Lagoon Nebula (M8), and the nebula at the upper right is the Trifid Nebula (M20). The object on the left that looks like a cat's paw is NGC 6559, which is much dimmer than the two nebulae in front. Also on the left, a thin blue filament of supernova remnant is visible, and this light originates from emission produced by a minute amount of oxygen atoms.
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