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- Horsehead_Nebula abstract "The Horsehead Nebula (also known as Barnard 33 in emission nebula IC 434) is a dark nebula in the constellation Orion. The nebula is located just to the south of the star Alnitak, which is farthest east on Orion's Belt, and is part of the much larger Orion Molecular Cloud Complex. The nebula was first recorded in 1888 by Scottish astronomer Williamina Fleming on photographic plate B2312 taken at the Harvard College Observatory. The Horsehead Nebula is approximately 1500 light years from Earth. It is one of the most identifiable nebulae because of the shape of its swirling cloud of dark dust and gases, which bears some resemblance to a horse's head when viewed from Earth.The red or pinkish glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. The darkness of the Horsehead is caused mostly by thick dust, although the lower part of the Horsehead's neck casts a shadow to the left. Streams of gas leaving the nebula are funnelled by a strong magnetic field. Bright spots in the Horsehead Nebula's base are young stars just in the process of forming.The nebula exhibits a noticeable change in the density of the stars which indicates that a red ribbon of radiant red hydrogen gas at the precipice of a sizable dark cloud. The underside of the horse's visible 'neck' reflects this concept of shade and density because it casts a great shadow across the field of view just below the horse's 'muzzle'. The visible heart of the nebula emerges from the gaseous complex to serve as an active site of the formation of "low-mass" stars. A glowing strip of hydrogen gas marks the edge of the massive cloud and noticeable densities of stars are present on either side.The dark cloud of dust and gas is a region in the Orion Nebula where star formation is taking place right now. A complex housing forming stars, known as a stellar nursery, can contain over 100 known organic and inorganic gases as well as dust consisting of large and complex organic molecules. The region of the Orion Nebula containing the Horsehead is a stellar nursery. The darkness of the massive nebula is not explained by this dust and gas, but by the complex blocking the light of stars behind it. The heavy concentrations of dust in the Horsehead Nebula region and neighbouring Orion Nebula are localized, resulting in alternating sections of nearly complete opacity and transparency.".
- Horsehead_Nebula thumbnail Barnard_33.jpg?width=300.
- Horsehead_Nebula wikiPageExternalLink bib_query?1990PASP..102.1337W.
- Horsehead_Nebula wikiPageExternalLink nph-bib_query?bibcode=1890AnHar..18..113P&db_key=AST&data_type=HTML&format=&high=44215828ae04166.
- Horsehead_Nebula wikiPageExternalLink File:HorseheadHunterWilson.jpg.
- Horsehead_Nebula wikiPageExternalLink B33-19thC_4.htm.
- Horsehead_Nebula wikiPageExternalLink a.
- Horsehead_Nebula wikiPageExternalLink stl_batou_l.html.
- Horsehead_Nebula wikiPageExternalLink ?img_source=IMG_all&zoom=8&img_borders=1&ra=5.68&de=-2.5.
- Horsehead_Nebula wikiPageExternalLink horsehead-nebula-barnard-33.
- Horsehead_Nebula wikiPageExternalLink ic434.html.
- Horsehead_Nebula wikiPageExternalLink images.pl?searchtype=freesearch&string=Horsehead+Nebula.
- Horsehead_Nebula wikiPageID "683942".
- Horsehead_Nebula wikiPageRevisionID "606165087".
- Horsehead_Nebula caption "The entire neighborhood of the nebula with nebula at near center in the shape of the head of a horse with IC 434 at the bottom left corner.".
- Horsehead_Nebula constellation Orion_(constellation).
- Horsehead_Nebula dec "−02° 27′ 30.0"".
- Horsehead_Nebula distLy "1.5".
- Horsehead_Nebula epoch "J2000.0".
- Horsehead_Nebula hasPhotoCollection Horsehead_Nebula.
- Horsehead_Nebula name "Horsehead Nebula".
- Horsehead_Nebula names "IC 434, Barnard 33,".
- Horsehead_Nebula names "LDN 1630, M3T 31,".
- Horsehead_Nebula names "[OS98] 52".
- Horsehead_Nebula notes "Resembles a horse's head".
- Horsehead_Nebula ra "20459.0".
- Horsehead_Nebula sizeV "8".
- Horsehead_Nebula type "dark nebula/diffuse nebulae".
- Horsehead_Nebula subject Category:Barnard_objects.
- Horsehead_Nebula subject Category:Dark_nebulae.
- Horsehead_Nebula subject Category:IC_objects.
- Horsehead_Nebula subject Category:Orion_Molecular_Cloud_Complex.
- Horsehead_Nebula subject Category:Star_formation.
- Horsehead_Nebula type BarnardObjects.
- Horsehead_Nebula type ICObjects.
- Horsehead_Nebula type Object100002684.
- Horsehead_Nebula type PhysicalEntity100001930.
- Horsehead_Nebula comment "The Horsehead Nebula (also known as Barnard 33 in emission nebula IC 434) is a dark nebula in the constellation Orion. The nebula is located just to the south of the star Alnitak, which is farthest east on Orion's Belt, and is part of the much larger Orion Molecular Cloud Complex. The nebula was first recorded in 1888 by Scottish astronomer Williamina Fleming on photographic plate B2312 taken at the Harvard College Observatory. The Horsehead Nebula is approximately 1500 light years from Earth.".
- Horsehead_Nebula label "Horsehead Nebula".
- Horsehead_Nebula label "Mgławica Koński Łeb".
- Horsehead_Nebula label "Nebulosa Cabeza de Caballo".
- Horsehead_Nebula label "Nebulosa Cabeça de Cavalo".
- Horsehead_Nebula label "Nebulosa Testa di Cavallo".
- Horsehead_Nebula label "Nébuleuse de la Tête de Cheval".
- Horsehead_Nebula label "Paardenkopnevel".
- Horsehead_Nebula label "Pferdekopfnebel".
- Horsehead_Nebula label "Туманность Конская Голова".
- Horsehead_Nebula label "سديم رأس الحصان".
- Horsehead_Nebula label "馬頭星雲".
- Horsehead_Nebula label "馬頭星雲".
- Horsehead_Nebula sameAs Mlhovina_Koňská_hlava.
- Horsehead_Nebula sameAs Pferdekopfnebel.
- Horsehead_Nebula sameAs Νεφέλωμα_της_Αλογοκεφαλής.
- Horsehead_Nebula sameAs Nebulosa_Cabeza_de_Caballo.
- Horsehead_Nebula sameAs Nébuleuse_de_la_Tête_de_Cheval.
- Horsehead_Nebula sameAs Nebulosa_Testa_di_Cavallo.
- Horsehead_Nebula sameAs 馬頭星雲.
- Horsehead_Nebula sameAs 말머리_성운.
- Horsehead_Nebula sameAs Paardenkopnevel.
- Horsehead_Nebula sameAs Mgławica_Koński_Łeb.
- Horsehead_Nebula sameAs Nebulosa_Cabeça_de_Cavalo.
- Horsehead_Nebula sameAs m.032qry.
- Horsehead_Nebula sameAs Q14271.
- Horsehead_Nebula sameAs Q14271.
- Horsehead_Nebula sameAs Horsehead_Nebula.
- Horsehead_Nebula wasDerivedFrom Horsehead_Nebula?oldid=606165087.
- Horsehead_Nebula depiction Barnard_33.jpg.
- Horsehead_Nebula isPrimaryTopicOf Horsehead_Nebula.