Light travel???

Question

Is achieving faster then light technology travel possible (yea I know even if it is, not in our life time) and if so, could we in theory travel in time???

Answer 1

Not possible, at least not in a straight line. As velocity increases in our universe, Einstein said that mass increases in a relativistic way, so that the closer you come to the speed of light, the more effective mass you have to accelerate, which means the power requirements increase exponentially, and that means, you can't get there from here because you don;t have a power source big enough. Now, there is a theory about space, that it can be looked at like a sheet of rubber, with things like planets and suns causing depressions, gravity wells, in proportion to their gravitational size. It is not too hard to imagine flexing space even more so, to make a fold so to speak so that instead of following the surface of the sheet from point A to point B, you fold space over until you can hop across the much smaller gap between, taking the shortcut instead of the long way round, Of course, this also would require a huge amount of power. No one has dilithium crystals as they have on Star Trek, yet.. Time travel is possible, maybe, but think about it, the future is like water, fluid, and the present is the point where it is freezing to become solid, fixed. However, Stephen Hawking said it best, when he said he would not take a bet against the existence of a time machine as his opponent may have seen the future and know the answer. Who am I to doubt the mind of such a brilliant physicist as Stephen Hawking?

Answer 2

I haven't seen any of heard of any time travelers yet so there is a glimpse into the future of time travel that Einstein said was impossible .

Answer 3

Not unless Einstein got it wrong. And special relativity is one of the most solidly established theories in all of physics.

Answer 4

The speed of light will never be exceeded in any way,unless you can change time!