- a comparatively older, spherically symmetrical, compact group of up to a million old stars, held together by mutual gravitation, that are located in the galactic halo and move in giant and highly eccentric orbits around the galactic center.[1855-60]
* * *Any large group of old, Population II (see Populations I and II) stars closely packed in a symmetrical, somewhat spherical form.About 150 have been identified in the Milky Way Galaxy. Most are distributed in a spherical volume above and below the Galaxy's disk (see galactic halo). Globular clusters contain many more stars (10,000–1,000,000) than open clusters do and can be several hundred light-years in diameter. Because they are so distant from the solar system, most are not visible to the unaided eye. Omega Centauri and a few others can be seen without a telescope as hazy patches of light.
* * *any large group of old stars that are closely packed in a symmetrical, somewhat spherical form. See star cluster.
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Globular cluster — s from the Sun and contains hundreds of thousands of stars. [cite news coauthors =The Hubble Heritage team url = http://hubblesite.org/newscenter/newsdesk/archive/releases/1999/26/ title = Hubble Images a Swarm of Ancient Stars work = HubbleSite… … Wikipedia
globular cluster — cluster of up to a million stars that are held together in a spherical form by the force of gravity (Astronomy) … English contemporary dictionary
globular cluster — noun Date: 1859 any of various approximately spherical clusters of gravitationally associated stars that typically populate galactic halos called also globular … New Collegiate Dictionary
globular cluster — noun a spherical star cluster containing thousands to millions of stars … Wiktionary
globular cluster — noun Astronomy a large compact spherical star cluster, typically of old stars in the outer regions of a galaxy … English new terms dictionary
globular cluster — noun : a cluster of stars, galaxies, or supergalaxies that is usually approximately spherical with compactness apparently increasing toward the center … Useful english dictionary
globular cluster — /glɒbjələ ˈklʌstə/ (say globyuhluh klustuh) noun one of many self contained, approximately spherical clusters of about a hundred thousand stars which are gravitationally associated with the Milky Way although they appear to be outside it … Australian English dictionary
cluster — clusteringly, adv. clustery, adj. /klus teuhr/, n. 1. a number of things of the same kind, growing or held together; a bunch: a cluster of grapes. 2. a group of things or persons close together: There was a cluster of tourists at the gate. 3. U.S … Universalium
Cluster diagram — A Cluster diagram or clustering diagram is a general type of diagram, which represents some kind of cluster. A cluster in general is a group or bunch of several discrete items that are close to each other.  The cluster diagram figures a… … Wikipedia
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