[Vortex]

Originally posted by Wdll:
Talking of which, and if you think I am in a way hijacking this thread please tell me, I never ever understood the whole can't go faster than light thing.

The reason you can't go faster than the speed of light is that as you accelerate your mass increases at a rate of 1/(c-s), ie the closer to the speed of light you get the greater your mass. Since it requires energy to accelerate you need infinite energy to reach the spped of light.
The mass increase has been poven experimentally using electons - which are theoretically mass less.

Like that if you travel from A to B in the speed of light (large distance) then you will age as long as you traveled (1 year?) while everybody else far more. Why would that happen? Why does it actualy matter how fast you are travelling to the actual time. I see time as a constant that progresses at the same frequency and direction no matter what.

Unfortunately time is not a constant. It is a relative quantity and varies according to where you measure it from.

As Phoenix also pointed out the speed of light is also not a constant. Einsteins equation is actually wrong e doesn't equal mc² but mc²+delta. I can't remember the actual proof but it was done by an Australian mathmatician about 3 years ago.