Einstein–Rosen bridge was described in an article published in July 1935. For the Schwarzschild spherically symmetric static solution where is the proper time and . If one replaces with according to For the combined field, gravity and electricity, Einstein and Rosen derived the following Schwarzschild static spherically symmetric solution where is the electric charge. The field equations without denominators in the case when can be written In order to eliminate singularities, if one replaces by according to the equation: and with one obtains In fiction Wormholes are a common element in science fiction because they allow interstellar, intergalactic, and sometimes even interuniversal travel within human lifetime scales. In fiction, wormholes have also served as a method for time travel. See also Alcubierre drive ER=EPR Gödel metric Krasnikov tube Non-orientable wormhole Self-consistency principle Polchinski's paradox Retrocausality Ring singularity Roman ring Notes References Citations Sources An excellent and more concise review. External links "What exactly is a 'wormhole'? Have wormholes been proven to exist or are they still theoretical??" answered by Richard F. Holman, William A. Hiscock and Matt Visser "Why wormholes?" by Matt Visser (October 1996) Questions and Answers about Wormholes—A comprehensive wormhole FAQ by Enrico Rodrigo Large Hadron ColliderTheory on how the collider could create a small wormhole, possibly allowing time travel into the past animation that simulates traversing a wormhole Renderings and animations of a Morris-Thorne wormhole NASA's current theory on wormhole creation Albert Einstein Astronomical hypotheses Black holes Conjectures Connection (mathematics) Exotic matter Faster-than-light travel General relativity Gravity Hypothetical astronomical objects Lorentzian manifolds Space Theory of relativity Time travel