Messier 19 (M19) is a globular cluster located in the southern constellation Ophiuchus. The cluster has an apparent magnitude of 7.47 and lies at a distance of 28,700 light years, or 8,800 parsecs, from Earth. It has the designation NGC 6273 in the New General Catalogue.
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Messier 18 (M18) is a relatively dim open star cluster located in the constellation Sagittarius. The cluster lies at an approximate distance of 4,900 light years, or 1,500 parsecs, from Earth and has an apparent magnitude of 7.5. Its designation in the New General Catalogue is NGC 6613.
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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.
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Messier 16 (M16), the famous Eagle Nebula, is a star-forming nebula with a young open star cluster located in Serpens. M16 lies near the borders with the constellations Sagittarius and Scutum. The nebula is best known for the Pillars of Creation region, three large pillars of gas famously photographed by Hubble in 1995.
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Messier 11 (M11), popularly known as the Wild Duck Cluster, is a rich, compact open cluster located in the southern constellation Scutum
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Messier 8 (M8), also known as the Lagoon Nebula, is a large, bright emission nebula located in the constellation Sagittarius. The star-forming nebula has an apparent magnitude of 6.0 and lies at a distance of 4,100 light years from Earth. It has the designation NGC 6523 in the New General Catalogue.
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Messier 6 (M6), also known as the Butterfly Cluster, is a bright open cluster located in the southern constellation Scorpius. It lies in the direction of the galactic centre, at an approximate distance of 1,600 light years from Earth.
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