Discussed by Ed Copeland and Mike Merrifield. Extra footage from these interviews: https://www.youtube.com/watch?v=2uYEayOBj1k More on Black Holes from Sixty Symbols: http://bit.ly/Black_Hole_Videos LIGO: https://www.ligo.caltech.edu/ Cool Black Hole simulations and info: http://www.black-holes.org/ LHC visit: http://bit.ly/LHCvideos Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/sixtysymbols This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Sixty Symbols videos by Brady Haran http://www.bradyharanblog.com/ Email list: http://eepurl.com/YdjL9