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in Star Trek or the star gate/jump gates used in the shows Star Gate and Babylon 5 respectively. In fact, the film Contact shows a perfect example of what traveling through a wormhole might look like.There are certain kinds of wormholes; some are known as Eisentein-Rosen Bridges, which were derived from general relativity and still another type of wormhole is called a traversable wormhole; one that supposedly humans could use for travel. At this point there are no known possible traversable wormholes. The first kind arose from studying black holes, which we know already exist and also the theoretical possibility of their exact opposites - a white hole. The Eisenstein-Rosen Bridge wormhole is looked at as a solution to the Eisenstein field equations that deals with blackholes. Later it was shown that such wormholes were extremely unstable and would collapse as soon as they are opened so that not even light can escape through.

The understanding is that nothing, not even light can escape a black hole's event horizon. Anything that is caught in its gravity well will eventually be stretched thin and crushed before entering. Theoretically, a wormhole is open for a brief time and is unstable and anything traveling through it will be crushed when it collapses. Something would have to be engineered to keep the hole open so that it could become stable enough to be used for travel; we would have to engineer a "traversable" wormhole as they probably would not exist naturally. Some scientists have theorized that negative matter, exotic matter, could be used to engineer a structure that could force a wormhole to stay open long enough for it to be useful for human travel through space. We woud have to come up with very advanced technology to engineer stable, artificial wormholes as natural ones are too risky.

a black hole in space is like a sink hole. but if traveling through a wormhole powered by a black hole what if the other end is actually a whitehole? A white hole would be the exact opposite of a black hole, where things are being sucked in through a black hole, things are being shot out from a whitehole; massive amounts of energy, matter and light. Where would one land us if we traveled through a black hole to the other side, a whitehole? Where would we be? Rigth now whiteholes are theoretical objects and traveling through these kinds of phenomena is theoretical, but the thinking and hard work behind such fantastic sounding ideas is why we can fly and drive cars today.

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