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Horsehead Nebula
Horsehead Nebula dark nebula located in the constellation Orion; designated IC 434 or B 33. It consists of a cloud of nonluminous interstellar matter resembling the outline of a horse's head and appears against the background of a bright emission nebula. The Horsehead Nebula measures about 4 min of arc at its greatest width. It is located near the belt of Orion at a distance of about 1,600 light-years from the earth. |
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"Horsehead Nebula." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>. "Horsehead Nebula." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1E1-Horsehea.html "Horsehead Nebula." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-Horsehea.html |
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Horsehead Nebula
Horsehead Nebula A dark nebula in Orion shaped like the head of a horse, also known as Barnard 33. It is about 6′ long and projects into the bright nebula IC 434 south of the star Zeta Orionis, but is well seen only on long-exposure photographs.
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Cite this article
"Horsehead Nebula." A Dictionary of Astronomy. 1997. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>. "Horsehead Nebula." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O80-HorseheadNebula.html "Horsehead Nebula." A Dictionary of Astronomy. 1997. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-HorseheadNebula.html |
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