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Star cluster

Star clusters are groups of stars which are gravitationally bound.

Two distinct types of star cluster can be distinguished: globular clusters are tight groups of hundreds of thousands of very old stars, while open clusters generally contain less than a few hundred members, and are often very young.

Note: This article excerpts material from the Wikipedia article "Star cluster", which is released under the GNU Free Documentation License.

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last updated on 2014-12-19 at 8:47 am EST

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