Carina–Sagittarius Arm
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Omega Nebula
Messier 18
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Small Sagittarius Star Cloud
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Orion Arm
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1745 in science
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Sagittarius (constellation)
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Nebula
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Messier object
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Molecular cloud
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Messier Object 17
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Swan Nebula
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Horseshoe Nebula
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Diffuse Nebula M17
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Messier 17
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NGC 6618
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