Nebulae - Event Horizon

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Most viewed - Nebulae

IC4592, the Blue Horsehead Nebula776 viewsReflection Nebula in Scorpius, lit up by Nu Scorpii. About 400 light-years away.

NGC 6888 - The Crescent Nebula775 viewsAn emission nebula in the constellation Cygnus, about 5000 light-years away from Earth; formed by the fast stellar wind from the Wolf-Rayet star WR 136 colliding with and energizing slower-moving matter ejected by the star when it became a red giant around 250,000 to 400,000 years ago.

IC4603 - Core of the Rho Ophiuchi Complex773 viewsThis blue reflection nebula glows by the light of the 7.9 magnitude star SAO184376 in the center.

NGC 1499 - The California Nebula771 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.

IC4604, The Rho Ophiuchi Nebula767 viewsPart of the Rho Ophiuchi complex, a gaggle of interstellar clouds centered 1 degree south of the star Rho Ophiuchi. Estimated distance from Earth is 460 light-years.

The Heart Nebula764 viewsEmission nebula in Cassiopeia, 7500 light-years away from Earth. The Fish-head Nebula is also seen as a cancerous outgrowth from the Heart Nebula at lower left.

Medusa Nebula (Sharpless 2-274)763 viewsPlanetary Nebula in Gemini. Discovered in 1955, first thought to be a supernova remnant, but Soviet astronomers in 1971 determined it to be a planetary nebula.

Sh2-106 - Snow Angel Nebula763 viewsEmission nebula and star forming region in Cygnus, about 2000 light-years from Earth.

Sharpless2-136, the Ghost Nebula758 viewsReflection nebula in Cepheus. 1470 light-years distant, near the cluster NGC 7023.

NGC6543, the Cat's Eye Nebula755 viewsPlanetary nebula in the northern constellation Draco. Distance from Earth about 3300 light-years.

M42 - The Great Nebula in Orion754 views1344 light-years away, 24 light-years across, this emission/reflection nebula is one of the brightest in the sky, as well as the closest region of massive star formation to Earth.

IC 5067 - The Pelican Nebula754 viewsAn emission nebula (H-II region) in the constellation Cygnus, associated with the North American Nebula (NGC 7000), but visually separated from it by a dark dust cloud. Supposedly has the shape of a pelican, though not very much in this image.

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Event Horizon - Astronomical and Terrestrial Images