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galactic nucleus
galactic nucleus The very central regions of a galaxy. A galaxy's nucleus often has a complex structure, with a dense cluster of stars within the inner few light years, and it can be the site of considerable activity. If the activity is high, with considerably more radiation emitted than can be accounted for by normal formation and evolution of stars, it is classed as an active galactic nucleus.
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"galactic nucleus." A Dictionary of Astronomy. 1997. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "galactic nucleus." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O80-galacticnucleus.html "galactic nucleus." A Dictionary of Astronomy. 1997. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-galacticnucleus.html |
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nucleus, galactic
nucleus, galactic See galactic nucleus.
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Cite this article
"nucleus, galactic." A Dictionary of Astronomy. 1997. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "nucleus, galactic." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O80-nucleusgalactic.html "nucleus, galactic." A Dictionary of Astronomy. 1997. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-nucleusgalactic.html |
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