Worm hole mode for space travel. [File photo]

A wormhole, also known as an Einstein–Rosen bridge, is a hypothetical topological feature of space-time that would fundamentally be a shortcut through space and time. To put it simply, a worm hole is much like a tunnel with two ends, each in separate points in space-time. For example, when a huge mountain blocks your way, it will take you a lot of time to climb over it; but with a tunnel, you can go through it quickly. In science fiction, a worm hole makes space travel for humans possible, as it shortens the distance and saves time. The movie Interstellar is based on the conception of a journey through a wormhole to find a possible habitable planet for mankind.