Hercules Cluster - Abell 2151
The Hercules Cluster (Abell 2151) taken on May 28th, 2013 is a cluster of about 200 galaxies[4] some 500 million light-years distant in the constellation Hercules. It is rich in spiral galaxies and shows many interacting galaxies. The cluster is part of the larger Hercules Supercluster, which is itself part of the much larger Great Wall super-structure.