 The centaurus supercluster is the closest neighbor of our Virgo supercluster. It contains a number of large galaxy clusters, including the centaurus cluster. The galaxies in the supercluster range from 150 to 200 million light-years away. This map plots the brightest galaxies in this area of the sky. The centaurus cluster is a swarm of hundreds of galaxies, 170 million light-years away. The cluster is filled with gas at temperatures of 10 million degrees or more, making it a luminous source for cosmic x-rays.