Originally posted by RAGE17
time travel is possible......but u just end up in a parallel universe to ur own.,...so u wont create a paradox by killin ur dad or somethin.........fear me for i am colossus17
The going "back in time and killing your grandfather" paradox has been highly contemplated... I personally believe, from a practical standpoint (saying time travel is possible, and saying time travel to the past is possible - even saying hawkings theory stated earlier, that a machine must be built for time travel to happen at all.) That an alternate or parallel universe would not be made because it would take a universally large source of energy to do that. If you could do that, then a infinite amount of universes would be created by just simply time-travelling into the past. Since you would be occupying space/time that has been now changed due to you being there. You cant create a universe out of nothing. Some theorys state there would be a 'time loop', another says that every event that you could do, you could never change the past, and you would end up failing infinitely trying to kill your grandfather - for instance. which I find very theoretical .. I dont feel like crediting sources because im lazy right now lol, but those are all true. Believe me, I am God. Lol.
also, heres a little known fact - when we view galaxies, not only do we see a few millions of light years in distance spanned. But time spanning from one end of the galaxy to the other, viewed by our standpoint, we see the past - im a little shaky on the specifics, but I was in astronomy, so yeah..