Credit: Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA) Acknowledgment: D. Carter (Liverpool John Moores University) and the Coma HST ACS Treasury Team
The Hubble's Advanced Camera for Surveys viewed a large portion of the Coma Cluster, spanning several million light-years across. The entire cluster is more than 20 million light-years in diameter, has a spherical shape, and contains thousands of galaxies. Most of the galaxies that inhabit the central portion of the Coma Cluster are ellipticals. These featureless "fuzz-balls" are pale goldish brown in color and contain populations of old stars. Both dwarf, as well as giant ellipticals, are found in abundance in the Coma Cluster.