Embedded Player The Laser Interferometer Gravitational-Wave Observatory's (LIGO) discovery of gravitational waves has put to rest a 100-year-old hypothesis from Einstein's time and given us a new view of the universe. 1A hears from the scientists who made this award-winning discovery. They are Kip Thorne, Feynman Professor of Theoretical Physics, emeritus, at California Institute of Technology, Rainer "Rai" Weiss, professor of physics, emeritus, at Massachusetts Institute of Technology, and Barry Barish, experimental physicist and Linde Professor of Physics, emeritus, at California Institute of Technology.