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Time Travel: Time travel is the act of travelling through time. Generally, it refers to those who travel forwards and backwards in time, either at will or accidentally.
There are those who will claim that time travel is impossible. Technically, they are not correct, as the entire world travels forwards in time on a fairly regular basis. General temporal manipulation is also possible, as with heroes or villains known to slow or speed up the passage of time around themselves in order to accomplish various effects. However, such people are usually referring to the act of travelling backwards in time, which is widely believed to be impossible.
Travelling Back In Time