100 Years of Relativity: From the Big Bang to Black Holes and Gravitational Waves

Kip Thorne, Feynman Professor of Theoretical Physics Emeritus at Caltech, describes the ideas underlying general relativity and the amazing discoveries about warped spacetime that have been made in the past 100 years. One hundred years ago, Albert Einstein formulated his general relativity theory, which describes space and time as warped by mass and energy.