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From my views yes its possible,surprising things happens when someone moves through space time,when ur speed relative to other objects is close to the speed of light.For that person time goes slower than the other person whom that person had left behind in earth.This effect will only be noticed when the person returns to the stationary people in the earth.
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thanx utkarsh
well i dont agree with u utkarshbansal
well @simran4biology ...!! why dont u "AGREE" with me??
because no one can travel faster or with more speed than light.
 Time travel possible because think of twins (1) one is in spaceship and another one is in earth (2). Compared 1’s timeframe 2’s will be slow. The mechanism behind this is “time dilation” and it has a stronger effect as you travel closer and closer to the speed of light.  
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