![]() In the upper universe, the throat has the appearance of a black hole consuming matter, light and energy below, it appears as a white fountain expelling matter, light and energy. The Schwarzschild throat joins the perfectly symmetrical upper and lower sheets that we are at liberty to interpret as parallel universes. This is the size assumed in Interstellar. For a typical stellar black hole of M = 10 solar masses, r = 30km. This radius corresponds to the event horizon, the immaterial boundary of the black hole, reduced now to a circle. 2 The Schwarzschild throat, or Einstein–Rosen bridge, has a minimum radius equal to the Schwarzschild radius r = 2GM/ c 2, where M is the mass of the black hole, G the gravitational constant, and c the speed of light. The embedding surface consists of a paraboloid-shaped throat linking two distinct sheets of space-time. ![]() The result is a 2-dimensional surface embedded in a 3-dimensional Euclidean space-a knife passing through an orange. But, in the case of a non-rotating black hole, space-time geometry remains fixed and no information is lost by looking at equatorial slices passing through the center of the sphere. This mapping is useless for the 4-dimensional space-time of general relativity because it would require a 5-dimensional space, and that is impossible to visualize. One space is visualized by embedding it in another space with an additional dimension. A technique known as embedding can be used to create a pictorial representation of a wormhole. Wormholes, long a staple of science fiction, arise as solutions to the equations of general relativity. An Artificial Wormholeĭ uring a scene in the first part of Interstellar, the chief scientist in the film, Professor Brand, describes the discovery some fifty years before of an artificial wormhole near Saturn. Thorne has written a popular book explaining how he tried to ensure that the depictions of science were as accurate as possible, despite the sometimes exorbitant demands of the filmmakers. Particular mention was made of the involvement of Kip Thorne as Interstellar’s scientific consultant and executive producer. ![]() The promotion for Interstellar emphasized the film’s scientific credentials and realism. The film makes reference to a range of topics, from established concepts such as fast-spinning black holes, accretion disks, tidal effects, and time dilation, to far more speculative ideas such as wormholes, time travel, additional space dimensions, and the theory of everything. Interstellar’s story draws heavily from contemporary science. Dust storms, failing crops, and famines have led them to a grim realization: humanity must find a new home amongst the stars. T he science fiction film, Interstellar, tells the story of a team of astronauts searching a distant galaxy for habitable planets to colonize.
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