Astronomers Are Homing in on The Colossal Feeding Processes of Huge Black Holes 14 APRIL 2021 The more we study the Universe, the more it seems likely that each galaxy is orbiting a cosmic colossus - a supermassive black hole, powering the galactic nucleus. There's a lot we don't know about these giant objects - including the glaring question of how they grow so huge - but new research could help us fill in some of the gaps. According to a new radio survey of all the galaxies in a region of the sky, every supermassive black hole in a galactic nucleus devours matter, although they go about it a little differently.