Well the way i thought of time travel is that you can only travel to a time that is in the future, a point in time after you left our relative time. For example imagine you were able to travel in a spacecraft at 90% of the speed of light. You would get into your spacecraft at earth and shoot into space. As your ship approaches it's top speed your relative time has been shifting further and further away from the people still on earth. You travel for some time at this speed, maybe in an orbit around the sun. Then head back to earth, slowing down over time, and landing. The length of time of your trip would determine the size of the time difference you would experience when you get back to earth.
If you were in space for 2 weeks and would compair dates with someone from earth you may find that they claim the date to be 2 weeks and 1 day after you left. You traveled a day into the "future". You spent 2 weeks on a ship, but basically you gained a day of existance. This would be more practical when teamed with some kind of suspended animation. In theory, you can send a group of humans into the far distant future. The only problem is you cant get back.
Disclaimer: Numbers made up for example! I have no idea on the real amount of time you would "gain" over any extended period of time at any PSL. If my understanding is completely wrong in every way feel free to tell me, this stuff interests me :P
__________________
We Must Dissent.
Last edited by ObieX; 10-23-2004 at 10:10 PM..
|