Wormhole. Conceptual computer artwork of a tunnel of grid lines representing the warped space-time of a wormhole. Wormholes are a theoretical solution to Einstein's equations for describing the properties of space-time. Theorists have suggested that on the smallest scale of the universe (the incredibly small Planck length), the fabric of space-time may be riddled with these tunnel-like wormholes. The concept is also found in science fiction, where they are used to travel between distant points of the universe. However, as wormholes would last for less than a second, such use would probably be impossible.