Wormhole through hyperspace. Artwork of a wormhole connecting the Earth (top) and a nearby star (bottom) through hyperspace. This hypothetical method of travel (red arrows) would shorten a journey that would take years even if travelling at or near the speed of light (yellow arrows). The concept of curved spacetime, and using wormholes to travel to distant parts of the universe, are a theoretical consequence of Einstein's General Theory of Relativity.