Eric J. Chaisson
Contributor
Director, Dudley Wright Center, Tufts University, Medford, Massachusetts. Author of Cosmic Dawn and others.
Primary Contributions (2)
Star cluster, either of two general types of stellar assemblages held together by the mutual gravitational attraction of its members, which are physically related through common origin. The two types are open (formerly called galactic) clusters and globular clusters. Open clusters contain from aβ¦
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