'Pandora's Cluster' seen by Spitzer
Thursday, September 29, 2016 - 05:31
in Astronomy & Space
This image of galaxy cluster Abell 2744, also called Pandora's Cluster, was taken by the Spitzer Space Telescope. The gravity of this galaxy cluster is strong enough that it acts as a lens to magnify images of more distant background galaxies. This technique is called gravitational lensing.