What is the name of the theoretical 'hole' in spacetime that could allow for faster-than-light travel?
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Wormhole
Also known as an Einstein-Rosen bridge, a wormhole is a solution to the equations of general relativity. While they are a popular staple of science fiction, their existence has never been proven.
Also asked as:
- What theoretical shortcut through spacetime is hypothesized to potentially enable faster-than-light travel?