Chasing Wormholes: The Hunt for Tunnels in Space-Time

Science fiction literature is full of stories in which tunnels in space-time — known as wormholes — are used for time travel. Scientists are looking at ways to use traversable wormholes (if they exist) to travel faster than the speed of light — and even to travel through time itself. "A traversable wormhole is a hyperspace tunnel, also called a throat, that connects together two remotely distant regions within our universe, or two different universes — if other universes