Documentary on time travel, paradoxes, special relativity, quantum mechanics, frame dragging, and more—told largely through interviews with modern physicists with a backdrop of a corny Museum of Time Travel in the future. Good explanation of relativistic time dilation using Einstein’s twin brother Bertrand and a light clock. Fun interview with physicist David Deutsch about the quantum multiverse and its relation to time travel paradoxes. Fun discussion of the first Superman movie. Jaw-dropping first-hand explanation from physicist Ron Mallet of how light might twist spacetime and result in particles being sent to the past. Attractive fashions worn in the museum of the future.