In the space opera Interstellar, astronauts seeking to save humanity have found a lifeline: a wormhole that has mysteriously appeared next to Saturn. The tunnel through spacetime leads to a distant galaxy and the chance to find habitable planets that humans can colonize. The movie's wormhole is based on real physics from retired CalTech professor Kip Thorne, an astrophysics pioneer who also helped Carl Sagan design his wormhole for the novel Contact. The visualizations are stunning and are being hailed as some of the most accurate simulations of wormholes and black holes in film. But there is one aspect of plunging into an interstellar express that the film doesn't address: How do you survive the trip?
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