Nebulae - Event Horizon

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Most viewed - Nebulae

Sharpless2-275 - The Rosette Nebula679 viewsHII region in the constellation Monoceros; distance 5,200 light-years from Earth. Open cluster NGC2244, in the doughnut hole, provides the energy that makes the nebula glow.

M20 - the Trifid Nebula (narrowband)678 viewsAn emission/reflection nebula in Sagittarius. About 4100 light-years from Earth.

Sharpless2-9 - Emission nebula in Scorpius677 viewsThere is also an area of reflection nebula (blue) around the star Sigma Scorpii, but the processing of this version doesn't reveal it very well. The globular cluster M4 is also in the field of view.

NGC6960 - The Western Veil Nebula676 viewsPart of the Cygnus Loop, a supernova remnant in Cygnus. Also known as the Witches’ Broom.

Sharpless2-1676 viewsCombination of a diffuse HII emission nebula and reflection nebula in the constellation of Scorpius with Pi Scorpii at its center.

NGC7635 - The Bubble Nebula - H-alpha enhanced version675 viewsAn emission nebula in the constellation Cassiopeia. The "bubble" is created by the stellar wind from a hot, massive star within a molecular cloud which contains the expansion of the bubble, preventing it from dissipating, and is also itself excited by the star. The nebula is 7 light years across and 7100 light-years away.

NGC2359 - Thor's Helmet673 viewsAn emission nebula in the constellation Canis Major. About 12,000 light-years distant and 30 light-years in size. Associated with the Wolf-Rayet star WR7.

M8, the Lagoon Nebula, and M20, the Trifid Nebula672 viewsTwo jewels of the summer sky captured in the same frame with a bridge of nebullosity between them.

NGC 1977, The Running Man Nebula in Orion671 viewsA reflection nebula embedded in a bright HII region, Sh2-171, found in Orion's Sword near the Great Orion Nebula M42. Sh2-171 also includes two other nebulae and the star cluster NGC-1981.

NGC2237 - The Rosette Nebula667 viewsEmission Nebula / HII region in Monoceros, with open cluster NGC 2244 in center of nebula.

NGC 2359 - Thor's Helmet661 viewsAn emission nebula in the constellation Canis Major; about 12,000 light-years away. Consists largely of interstellar gas swept up by the central star, and partly of material from the star itself, which is an extremely hot, massive Wolf-Rayet star in a short-lived pre-supernova stage.

NGC 7023, the Iris Nebula659 viewsReflection nebula in Cepheus. Actually the nebula is LBN 487, and NGC 7023 is a star cluster within the nebula. 1300 light-years away and 6 across.

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Event Horizon - Astronomical and Terrestrial Images