A gigantic galactic graveyard lurks in the distant universe, and the death toll is growing.
New observations establish a supercluster centered on the cluster CL0016+16 as the largest galactic congregation ever found, astronomers report in Astronomy & Astrophysics. The supercluster extends even farther than previously thought, and it’s drawing in more and more galaxies.
CL0016+16 lies about 6.7 billion light-years away from Earth. That cluster was first observed in 1981, and later observations hinted that it might be just one of a cluster of clusters. Observations by David Koo of the University of California, Santa Cruz in 1996 pointed to a large structure extending from the main cluster.