Galaxy Group
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A Galaxy Group is a Galaxy that ...
- See: Local Group, Galaxy, Gravitationally Bound, Luminosity, Milky Way, Sun, Galaxy Cluster, Galaxy Groups And Clusters, Supercluster.
References
2017
- (Wikipedia, 2017) ⇒ https://en.wikipedia.org/wiki/Galaxy_group Retrieved:2017-7-27.
- A galaxy group or group of galaxies (GrG ) is an aggregation of galaxies comprising about 50 or fewer gravitationally bound members, each at least as luminous as the Milky Way (about 1010 times the luminosity of the Sun); collections of galaxies larger than groups that are first-order clustering are called galaxy clusters. The groups and clusters of galaxies can themselves be clustered, into superclusters of galaxies. The Milky Way galaxy is part of a group of galaxies called the Local Group.