Q&A: Galaxies, Galaxy Clusters, AGN, and Quasars

Q:
Who was Abell 2125 named after and why?

A:
The astronomer George O. Abell did a careful analysis of clusters of galaxies, and the clusters he discovered and catalogued carry his name.

We have more images of Abell 2125 here:
http://chandra.harvard.edu/photo/2004/a2125/more.html

More information on his work may be found here:
http://www.daviddarling.info/encyclopedia/A/Abell_cluster.html