Perhaps , I can try to clarify what Flamechy wrote.
Flamechy wrote:On different places with different speed the time is different.
True ,time is relatavistic.
Flamechy wrote: If we speed up enough we can move trough the time.
Proven. If we take two identical atomic clocks; one we leave stationary, the other clock, we fly it round the world
on a jet.
Then when the two are compared, the jet set clock will be found to be running a millionth of a second or so, behind the stationary one (Hafele–Keating experiment).
Flamechy wrote:Everyting will be slow to us and if we have enough speed we will disappear to the others.
I'm pretty sure thats an episode of Star Trek.
There are several solutions to Einsteins General Relativity equations, that allow time travel.
One of which is; you get an iron cylinder roughy 10,000 miles long with a diameter of a thousand miles, rotate it
about its vertical axis, to approximately 80% the speed of light, and it will then form vortices of space-time
(much like the ripples of bath-water that form when you pull the plug out) at certain points along the cylinder,
these 'ripples' will aquire the mathematical properties that equate to going backwards in time.
Whether you could ride the rippples is another matter.
However General Relativity is not a complete explanation of the universe,
General Relativity cant explain how your phone works nor how any transistor works (quantum tunneling, it's cool!).
The equations of General Relativity just wont work with small stuff.
That's where Quantum Mechanics steps in, and does the math that makes your phone work.
But Quantum Mechanics wont explain the big gravity,space-time stuff. These two theories work on their own turf
but wont join together to form a coherent explanation of the universe.
So to sum up, General Relativity says time travel is possible, Quantum Mechanics has little to say about time travel,
neither theory is a complete explanation of the universe.
Without a complete or coherent explanation of the universe (space-time,entropy,etc).
The question of whether time travel is possible or not, is an open one.
Crikey, all that text just for no answer,don't ya just l