What+is+a+worm-hole+(graham)

=__**Worm-Holes**__= =What is a worm-hole?= =How Do They Work?= There is no observational evidence for wormholes, but on a theoretical level there are valid solutions to the equations of the theory of [|general relativity] which contain wormholes. Because of its robust theoretical strength, a wormhole is also known as one of the great physics metaphors for teaching general relativity. The first type of wormhole solution discovered was the //Schwarzschild wormhole// which would be present in the [|Schwarzschild metric] describing an eternal [|black hole], but it was found that this type of wormhole would collapse too quickly for anything to cross from one end to the other. Wormholes which could actually be crossed, known as //traversable wormholes//, would only be possible if [|exotic matter] with negative [|energy density]could be used to stabilize them. ([] last modified on 11 April 2012 at 13:49.) I believe this is correct because I have found the same thing at many reliable sites and also because there has to be an end to a black hole which explains a worm hole. =Video:= =Pics:= media type="file" key="My Movie.wmv" width="278" height="198"
 * A wrinkle in space
 * works by bringing 2 points in space closer together
 * a shortcut through time