This find is also believed to represent the most-distant black hole discovered so far.
Black holes are massive star-like objects that only flare with light when they engulf nearby stars.
Radio galaxies emit radio waves that are thought to be powered by beams emanating from super-massive black holes. The nearest and first known radio galaxy, Cygnus A, was discovered nearly 50 years ago. To date, nearly one thousand radio galaxies have been identified. The new, large optical telescopes allow astronomers for the first time to begin exploring the 'Dark Ages,' when the Universe was very young and the first stars and black holes were born. Lawrence Livermore National Laboratory is managed by the University of California for the U.S. Department of Energy.