I've actually done a lot of reading on the subject. Einsteins Theory of Relativity put us in the general direction. You guys should look up stories about The Philadelphia Experiment. Thats a good one. Also, time travel doesnt have to be exactly how you think it is. Imagine you're in a spaceship traveling thru a wormhole to the nearest star - Alpha Centauri. It will take 1 year for the light to get back to Earth from there. You leave Earth and go thru the wormhole to the star. You arrive. The image of you arriving does not get to a telescope on Earth for a year. Technically, in our reality, or our relative perception, you're 1 year ahead of us. You went forward 1 year because it will take a year for us to catch up. Pretty interesting eh?