Black holes warp space and time, squeeze matter to a vanishing point, and trap light so that it cannot escape. Black holes, with masses millions or billions times that of our sun, sit at the center of galaxies. How can black holes perform such stupendous tricks, and what can we learn from them? Free access to Closer to Truth's library of 5,000 videos: http://bit.ly/376lkKN Watch more interviews on black holes: https://bit.ly/2OjtSdY Leonard Susskind is the Felix Bloch Professor of Theoretical Physics at Stanford University, and Director of the Stanford Institute for Theoretical Physics. He received a BS in physics from City College of New York and a PhD from Cornell University. Register for free at CTT.com for subscriber-only exclusives: http://bit.ly/2GXmFsP Closer to Truth presents the world’s greatest thinkers exploring humanity’s deepest questions. Discover fundamental issues of existence. Engage new and diverse ways of thinking. Appreciate intense debates. Share your own opinions. Seek your own answers.