The Largest Black Holes in the Universe

Meet the new recordholder for the LARGEST BLACK HOLE IN THE UNIVERSE (so far) in this EXPANDED and UPDATED version (in 1080p) of our most popular Cosmic Journeys episode. Our Milky Way may harbor millions of black the ultra dense remnants of dead stars. But now, in the universe far beyond our galaxy, there s evidence of something far more ominous. A breed of black holes that has reached incomprehensible size and destructive power. Just how large, and violent, and strange can they get