A galaxy cluster, or a cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity, [1] with typical masses ranging from 10 14 to 10 15 solar masses. Clusters consist of galaxies, heated gas, and dark matter. [2]

Defining the limits of galaxy clusters is imprecise as many clusters are still forming. In particular, clusters close to the Milky Way tend to be classified as galaxy clusters even when they are much smaller than more distant clusters. Some clusters exhibiting strong evidence of dark matter.

Clusters of galaxies are the most recent and most massive objects to have arisen in the hierarchical structure formation of the Universe and the study of clusters tells one about the way galaxies form and evolve.

Feb 19, 2009 · cluster of galaxies, Gravitationally bound grouping of galaxies, numbering from the hundreds to the tens of thousands. Large clusters of galaxies often exhibit extensive X-ray emission from intergalactic gas heated to tens of millions of degrees.

Galaxy clusters are home to the biggest galaxies in the known universe, and provide us with information about the structure of the universe on the largest scales. Mapping the structure of galaxy clusters using the hot plasma that fills the space between galaxies.

Oct 22, 2024 · Galaxy clusters contain many more galaxies, from hundreds to thousands. The Coma cluster, for example, houses over 1,000 individual galaxies and stretches over 20 million light-years across.

Sep 23, 2021 · Clusters of Galaxies. Most galaxies are not alone in the vast expanse of space, but are connected to one or more other galaxies by gravity. The same force that holds you onto the Earth can keep many individual galaxies bound together.

Galaxy clusters are gravitationally bound groupings of galaxies, numbering from the hundreds to the tens of thousands. This is an alphabetically ordered list of selected galaxies and galaxy clusters. (See also astronomy; cosmology; list of stars; nebula; protogalaxy; star …

Explanation: Almost every object in the above photograph is a galaxy. The Coma Cluster of Galaxies pictured above is one of the densest clusters known - it contains thousands of galaxies. Each of these galaxies houses billions of stars - just as our own Milky Way Galaxy does.

Galaxy clusters are the largest gravitationally bound objects in the universe. They have three major components: Dark matter, a mysterious form of matter that has so far escaped direct detection with any type of telescope, but makes its presence felt through its gravitational pull on the galaxies and hot gas.