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Yes. This was all summed up by Einstein with "Time is relative {to velocity and location}"... although ultimitly everything is relative.
The ability to "travel" forward through time exists. All you need to do is move very quickly. This means time passes slower relative to you, so you get to the future in less time (or, "the faster you hurry, the later you arrive {from everyone else's perspective}"). Traveling backwards in time has been dubbed "impossible"... but you never know.
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The 'time is related to velocity' thing, isn't that the theory Einstein had that if you takec 2 identical twins who are say 20 years old, and stick one in a rocket and send her into space for several Earth years (Lets say 40), then when she returns to Earth, the twin who stayed on earth will be 60 yet the one wh owent in the rocket will only be in like her 30's-40's? 9I actually have this written down somewhere in a book on space, I'll try and find it.)
EDIT: Here it is, straight from the book:
'At the start, the twins are aged 25. Both are living on Earth, and time passes at the same rate for each of them.
One twin gets on the spacecraft, and it speeds off from Earth at 98% lightspeed. After 5 years on the ship's onboard clock, the twin turns it round and heds back to earth.
When the astronaut twi nreturns, she is 35 (5 years each way) but the twin who stayed on earth is 70. This is because time passes slower the faster the object moves. That the theory you meant?
And can you explain the 2nd bit again, I get the 'travelling faster reduces relative time' bit, but this 'faster you travel, later you arrive' confuses me. Do you mean that it only appears that you are travelling faster, or something else? EDIT: Did you mean the theory of time dilation- time appears to pass slower and acts slower on somehting the faster it moves, thus creating a 'shortcut' through time?