Ok, here's what I heard. It's highly theoretical, so feel free to bring arguments against it, if you wish. I'm just recounting what I read.
The procedure involves a wormhole, basically a bigger cousin of a black hole. A wormhole is a tunnel through the space-time continuum (the fabric of reality, you might say), allowing (I think) instantaneous travel between the two end points.
One must understand that by their very nature, wormholes tend to be unstable (generally the bigger they get, the more stable they are). Anyways, imagine a wormhole which has one end that is stationary, while the other end is thrashing around at a great speed (let's say, for the purpose of conjecture, at about three-fourths of the speed of light). Apply the theory of relativity here: the faster an object travels, the slower time moves. Time is literally moving at a slower rate around the thrashing end. Now imagine that (again, for the sake of conjecture) you've been camping for month on an asteroid that somehow has been orbiting the thrashing end of the wormhole. Remember relativity again: what has been a month to you could be years to the stationary end of the wormhole. Now you fire up your jetpack and launch yourself into the wormhole. You come out the other end. For you, a month has passed. For those near the stationary end of the wormhole, let's say that it's been ten years. You have essentially cheated time - you've traveled nine years and eleven months into the future. Again, highly theoretical and strange.
Another, "cleaner" time travel scenario (that I read so long ago that I don't remember how it works) involves creating a wormhole, and then using some gravity generator (natural - a planet or star - or artificial) to drag one end of the wormhole around the other until the tunnel of the wormhole is kinda twisted around itself, with the two ends right next to each other. The book said that a ship could fly in the unaffected end and come out the affected end a month into the past. Even though I haven't a clue how it all works, something tells me that gravity's correllation with the space-time continuum has some affect on time travel. For those who don't know, gravity is the warping of the space-time continuum, hence bent starlight. This is why black holes have such massive gravitational pulls - they are literally holes in the space-time continuum (stuff, in a sense, falls into them).
Any thoughts?
