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zero_cool
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The Einstein- Rosen Bridge- The relativistic description of the black hole comes from the work of Karl Schwarzschild. In 1916, barely a few months after Einstein worte down his celebrated equations. Schwarzsghild was able to solve Einsteins equations exactly and calculate the gravitational field of a massive, stationary star. <br />Schwarzschild's solution has several interesting features.<br /> First, a "point of no return" surrounds the black hole. Any object that comes closer than this radius will inevitably be sucked into the blak hole, with no possibility of its escape, (i know most people on here, know all of this, but bear with me on this, some of this is basics.) Inexorably, any person unfortunate enough to come within the Schwarzschild radius would be captured by the black hole and crushed to death. Today, this distance from the black hole is called the "Schwarzschild Radius" or the "Event Horizon"(the farthest visible point)<br /><br />Second, anyone wo fell within the the Schwarzschild radius would be aware of a "mirror universe" on the "other side" of space-time. Einstein was not worried about the existence of this bizarre mirror universe because communication iwht it was impossible. any space probe sent into the center of a BH would encounter infinate curvature; that is, the gravitational field would be infinate, any material object would be crushed. The electrons would be ripped off atoms and even protons and neutrons within the nuclei themselves would be riped apart. Also, to penetrate through to the alternative universe, the probe would have to go faster than the speed of light, which is not possible in some minds, but i think otherwise, and ill explain that in another thread so look for it, but anyways, this mirror universe is mathematically necessary to make sense of the Schwarzschild solution, it could never be observed physically. Cosequently, the celebrated 'Einstein-Rosen Bridge" connecting these two universes was considered a mathematical quirk. T