Event Horizon - Astronomical and Terrestrial Images

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The Draco Trio of Galaxies588 viewsThree galaxies in Draco: NGC 5981, edge-on spiral at top; in the middle, elliptical galaxy NGC 5982; bottom, spiral galaxy NGC 5985.
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M17, the Swan Nebula (nasrrowband)588 viewsAlso known as Omega. Checkmark, Lobster and Horseshoe Nebula. 5,000 to 6,000 light-years away and 15 light-years across. Prolific star-forming region.
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Sharpless 2-82 - The Little Cocoon nebula in Sagitta587 viewsAlso known as the Little Trifid Nebula, LBN 129 and DG 159. Ionized by the B0.5V star HD 231616.
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NGC 7023 - the Iris Nebula in Cepheus586 viewsA bright reflection nebula in the constellation Cepheus, about 1300 light-years away. Actually NGC 7023 is the star cluster inside the nebula, which is properly designated LBN 487.
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M108 and M97 in one frame586 viewsBarred spiral galaxy M108, nicknamed the Surfboard Galaxy, about 28 million light years away; and planetary nebula M97, the Owl Nebula, 2030 light-years away, both in Ursa Major.
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M20 - the Trifid Nebula (narrowband)585 viewsAn emission/reflection nebula in Sagittarius. About 4100 light-years from Earth.
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NGC6334 - Cat's Paw Nebula584 viewsAn emission nebula and star-forming region in the constellation Scorpius; distance from Earth is about 5500 light-years. Also known as Gum 64 or the Bear Claw Nebula.
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M20 - The Trifid Nebula583 viewsA combination of an open cluster of stars, an emission nebula (the lower, red portion), a reflection nebula (the upper, blue portion) and a dark nebula (which accounts for the gaps dividing the nebula into lobes). About 5000 light-years away in the constellation Sagittarius.
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NGC 1499 - The California Nebula582 viewsAn emission nebula in the constellation Perseus, so called because it resembles the State of California in shape (though not in this image). About 1000 light-years from Earth.
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M33 - The Triangulum Galaxy581 viewsAbout 3 million light-years away, this is the third-largest member of the Local Group, which includes M31 and the Milky Way.
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Messier 61 - Face-on Barred Spiral Galaxy in Virgo581 viewsOne of the largest members of the Virgo Cluster, M61 is a starburst galaxy, i.e. it has an unusually high rate of star formation, with an active galactic nucleus that features a massive nuclear star cluster and a supermassive black hole. It is about 53 million light-years away from Earth.
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IC405 - The Flaming Star Nebula in Auriga581 viewsNarrowband view of an emission and reflection nebula in the constellation Auriga north of the celestial equator, surrounding the bluish, irregular variable star AE Aurigae. About 1500 light-years away.
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