Distant Galaxy Cluster CL 0939+4713
Depicts: CL 0939+4713
Copyright: Alan Dressler (Carnegie Institution) and NASA
This Hubble Space Telescope (HST) image of the central portion of a remote cluster of galaxies (CL 0939+4713) as it looked when the universe was two-thirds of its present age. Hubble's high resolution allows astronomers to study, for the first time, the shapes of galaxies as they were long ago.
Last Update: 1 September 2019