posted on Oct, 2 2004 @ 06:05 PM
To travel back in time does not require the making of a new universe. As of now... the only 100% possible way to travel back in time would be to
travel at speeds faster than light. If we were to do this, we wouldn't be back in time on Earth... but where you stopped. Say you travel; at twice
the speed of light, 4 years from Earth. As soon as you stopped, if you could see earth, you would see it as it was 4 years ago because it took 4
years for that light to get there. There is no way that you could interact on Earth in the past. you woul;d only be able to see it. Also,
technically everything we see is from the past. It takes the light from objects nanoseconds to reach our eyes, so everything you see happened like
.000000000001 seconds ago...