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Coalsack
Coalsack A conspicuous dark nebula in the southern constellation Crux, easily visible to the naked eye as a dark patch against the brighter background of the Milky Way. It lies about 600 l.y. away and covers nearly 7° × 5° of sky. Its true diameter is about 60 l.y., and its mass is about 3500 solar masses. An open cluster, the Jewel Box, is visible next to the Coalsack, but is actually far more distant. The Northern Coalsack is another name for part of the Great Rift.
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"Coalsack." A Dictionary of Astronomy. 1997. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "Coalsack." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O80-Coalsack.html "Coalsack." A Dictionary of Astronomy. 1997. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-Coalsack.html |
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Coalsack
Coalsack see Milky Way . |
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Cite this article
"Coalsack." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "Coalsack." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1E1-X-Coalsack.html "Coalsack." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-X-Coalsack.html |
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