Shapley Supercluster

The Shapley Supercluster or Shapley Concentration (SCl 124) is one of the largest concentrations of galaxies in the observable universe that forms a bound, gravitationally interacting unit, thereby pulling itself together instead of expanding with the universe. It appears as a striking overdensity in the distribution of galaxies in the constellation of Centaurus. Its center is located roughly 650 million light-years away (z=0.046).

Latest observations suggest Shapley Concentration may contain the Laniakea Supercluster (which in turn contains the Local Group, including the Milky Way) along with a few other nearby superclusters that are moving towards the structure.