James R. Foeman, Ph.D. (but not in astrophysics) said on Dec. 14, 2012 at 3:41 p.m. Dear Sirs:
Is it really correct to call this "the largest black hole in the universe"? Have we really found all of the black holes that exist? I thought that we have found only a small fraction of such objects, and until we have located at least 90% of them, can we really say that this the largest one?
James R. Foreman, Ph.D., Atmospheric Science, U. of Michigan, 1986