Cruz took a trip to NASA’s Jet Propulsion Laboratory, and it was every bit as cool as it sounds. He sat down with “Interstellar” writer Jonathan Nolan, and physicist Kip Thorne to talk about the science and the world of the film.br br Jonathan Nolan and Kip Thorne answered questions about the interplay between science and storytelling, what’s actually written on Dr. Brand’s blackboards, and whether a wormhole would “really” look like that.