[math-fun] BH/BH collision releases 2-3 solar masses of gravity wave energy

30-solar mass black hole coalesces with a 35-solar mass black hole, producing a 62-solar mass hole, giving out 2-3 solar masses worth of gravitational wave energy in approx. 1/5 second ! 76-minute video of the talk Rainer Weiss from MIT recently gave at KITP. It was an excellent talk that explains much about their detection of gravity waves. http://online.kitp.ucsb.edu/online/colloq/weiss1/