Wormhole

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In physics, a wormhole is a hypothetical topological feature of spacetime that is, fundamentally, a 'shortcut' through space and time. Simply, spacetime is a two-dimensional (2-D) surface that, when 'folded' over, allows the formation of a wormhole bridge. A wormhole has at least two mouths that are connected via a throat or tube. If the wormhole is traversable, then matter can 'travel' from one mouth to the other via the throat. There is no observational evidence for wormholes, and, although wormholes are valid solutions in general relativity, this is only true if exotic matter can be used to stabilize them.