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"Time Travel" - Fantasy Or Reality

Well firstly what is Time Travel?

Time travel is simply the movement between certain points in time, relative to movement between different points in space by an object or a person, typically in movies or science fiction it is done with the use of a hypothetical device known as a time machine. Time travel is a widely recognized concept in philosophy and fiction, particularly science fiction. The idea of a time machine was first popularized by H. G. Wells' in  1895 in his novel "The Time Machine".

It is uncertain if time travel to the past is physically possible. Forward time travel, outside the usual sense of the perception of time , is an extensively observed phenomenon and well-understood. 


Many in the scientific community believe that backward time travel is highly unlikely. Any theory that would allow time travel would introduce potential problems of Causality. The classic example of a problem involving causality is the "grandfather paradox": what if one were to go back in time and kill one's own grandfather before one's father was conceived? 

Well one way to time travel would be through the black holes. As time slows down near the black hole it could be a potential way , one can build a super strong spacecraft and can go near a black hole and as time slows down , if someone safely spends time in spacecraft and then returns to the earth for him it would be just an month or so but for the people living on earth it would be a century or two passed since the spacecraft left. 

Another way to time travel could be a "Worm Hole".

A wormhole can be visualized as a tunnel with two ends at separate points in spacetime (i.e., different locations, different points in time, or both).

 
One can enter a wormhole in say a point A in present and can exit through other side on say point B(distinctly far away in space) and can end up time traveling in future. Wormholes are a one way trip in time and cannot be reversed and cannot take you back in past or your present where you entered in the wormhole. But we still haven't found any trace of the wormholes yet but we know they must exist as predicted by the Einstein's theory of  general relativity.

So in the end i would only say that time travel is possible but there are still some engineering problems to solve and then we will finally be able to do time travel , but that only to future as time traveling to past is still not possible in theories or any proof that it can be done.
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