... Behemoth black hole found in an unlikely place . ... black holes . ... Early black holes grew big by eating cold, fast food . ... Researchers at Carnegie Mellon University's Bruce and Astrid McWilliams Center for Cosmology have discovered what caused the rapid growth of early supermassive black holes т?? a steady diet of cold, fast food. ... This process, called shock heating, would stop black holes in the early universe from growing fast enough to reach the masses we see. ...