Kip Stephen Thorne is an American theoretical physicist, known for his contributions in gravitational physics and astrophysics. A longtime friend and colleague of Stephen Hawking and Carl Sagan. He is one of the world’s leading experts on the astrophysical implications of Einstein’s general theory of relativity. He continues to do scientific research and scientific consulting, most notably for the Christopher Nolan film Interstellar (2014).

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Barry Clark Barish is an American experimental physicist. He is a Linde Professor of Physics, emeritus at California Institute of Technology. He is a leading expert on gravitational waves.