Clusters of Galaxies

Clusters of galaxies are groups of galaxies that are gravitationally attracted to one another. Clusters may come in small groups of a dozen to two dozen members, such as the Local Group which includes the Milky Way and the Andromeda galaxy. Larger clusters of galaxies can contain several thousand members. On even larger scales, galaxy superclusters may exist, containing about a hundred clusters of galaxies.

Click any thumbnail below to view the details of that image. Other images of the atomic hydrogen in clusters of galaxies can be found in the HI Rogues Gallery. Visit this non-NRAO website for more information on clusters of galaxies.

Abell 2255

COSMOS field

HCG 007

Virgo Cluster

Virgo Cluster

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