Known Galaxy Clusters
Date: 01 March 2005
Satellite: XMM-Newton
Depicts: Diagram of the distribution of known galaxy clusters
Copyright: Mullis et al.
Schematic diagram of the distribution of known galaxy clusters in space. As Earth-bound observers look out from the apex of the cone, they see an increasingly more distant and earlier universe. Distance is marked on the right-hand side in units of redshift, while the corresponding cosmic look-back time is indicated on the left-hand axis. The newly discovered cluster, labelled XMMU J2235, falls in a remote regime, well beyond the horizon of previous studies (labelled ROSAT horizon).
Last Update: 1 September 2019
