A Cluster of Galaxies Four Billion Light-years Away
![](https://cdn.sci.esa.int/documents/34247/35306/1567218520853-i_screenimage_32874.jpg)
Date: 30 November 1992
Satellite: Hubble Space Telescope
Depicts: CL 0939+4713
Copyright: Alan Dressier, Carnegie Institution, and NASA Co-investigators: Augustus Oemler (Yale Universfty), James E. Gunn (Princeton University), Harvey Butcher (the Netherlands Foundation for Research in Astronomy)
Last Update: 1 September 2019