Galaxy cloud

"galaxy cluster cloud" redirects here. For the mid-20th-century usage for a 'cloud of clusters', see galaxy supercluster. For the early-through-mid-20th-century usage, a nebulous collection of galaxies, see galaxy groups and clusters.

This article is about a type of subdivision of a galaxy supercluster. For a cloud in a galaxy, see interstellar cloud.

A galaxy cloud or cloud of galaxies is a group of galaxy groups and a substructure of a supercluster. Clouds are regions of higher density of groups and galaxies within superclusters. They have a typical characteristic dimension of 50 Mpc/h. About 25% of all galaxies are members in clouds.

The Virgo Supercluster (to which the Milky Way belongs) contains the Virgo cluster, the Canes Venatici Cloud and the Virgo II Cloud.

List of clouds

This list is incomplete; you can help by expanding it.

Cloud	Data	Notes	Refs

References

• R. Brent Tully (June 15, 1982). "The Local Supercluster". Astrophysical Journal, Part 1. 257: 389–422. Bibcode:1982ApJ...257..389T. doi:10.1086/159999.

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