Renowned astrophysicist Kip Thorne, co-founder of LIGO (Laser Interferometer Gravitational Wave Observatory) and executive producer / scientific advisor on the movie 'Interstellar,' spoke at Cornell April 6, 2016 as part of the Yervant Terzian Lectureship Series. The talk encompassed gravitational waves—detected for the first time in September 2015—black holes, the Big Bang, the warping of spacetime and, of course, Interstellar. All of these seemingly disparate topics have a common thread: Einstein's 1915 general theory of relativity, which is his theory of gravity, and its implications for our understanding of the cosmos.