Messier 17 (M17), also known as the Omega Nebula, is a famous star-forming nebula located in the southern constellation Sagittarius.
The diffuse emission nebula lies near the constellation’s northern border with Scutum, at a distance of 5,000 to 6,000 light years from Earth. It has an apparent magnitude of 6.0. M17 is also known as the Swan Nebula, Lobster Nebula, Horseshoe Nebula and Checkmark Nebula.
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