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A speculative concept describing the use of wormholes, Einstein-Rosen bridges, or other topological features of spacetime to travel between distant points without crossing the intervening space. Unlike ordinary travel through space, spacetime tunneling would involve traversing a shortcut—a tunnel where spacetime is warped to connect two otherwise far apart regions. It remains a theoretical possibility within general relativity, though requiring [exotic matter] with [negative energy] density to keep the tunnel open. In popular [imagination], spacetime tunneling is the ultimate workaround for cosmic distances, allowing journeys that would otherwise take millennia to be completed in moments—if the physics can be made to work.
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