Nebulae - Event Horizon

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Most viewed - Nebulae

NGC 6888 - The Crescent Nebula732 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.

IC4604, The Rho Ophiuchi Nebula731 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.

Medusa Nebula (Sharpless 2-274)725 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.

The Heart Nebula725 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.

Sharpless2-136, the Ghost Nebula724 viewsReflection nebula in Cepheus. 1470 light-years distant, near the cluster NGC 7023.

Sh2-106 - Snow Angel Nebula719 viewsEmission nebula and star forming region in Cygnus, about 2000 light-years from Earth.

M97 - The Owl Nebula717 viewsPlanetary nebula in the constellation Ursa Major, 2030 light-years distance from Earth and about 8000 years old. The blurred appearance results from the fact that it consists of several overlapping shells of gas. The shells are not entirely concentric, but form a barrel-like structure which gives rise to the owl-like appearance.

NGC6543, the Cat's Eye Nebula716 viewsPlanetary nebula in the northern constellation Draco. Distance from Earth about 3300 light-years.

NGC 1499 - The California Nebula713 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.

IC 1848 - The Soul Nebula711 viewsAn emission nebula in Cassiopeia, eastern neighbor of the Heart Nebula, IC 1805. About 6,500 light-years away, it spans 100 light-years, and is too big at that distance to fit into my telescope's field of view, so only part of it is seen here.

NGC7380 - The Wizard Nebula708 viewsOpen cluster with surrounding nebulosity in Cepheus, about 8500 light-years away.

M78 - Reflection Nebula in Orion707 viewsM78 - Reflection Nebula in the Orion B molecular cloud complex, 1,350 light-years from Earth.

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Event Horizon - Astronomical and Terrestrial Images