Is Time Travel Possible?

 
   To many of us time-traveling is just science fiction. Or is it not? Today we will think about the possibilities about time travel.
   Einstein created a theory known as the theory of relativity. In it, it suggested that time was the fourth dimension. It also said gravity could slow time down. So if we are in space, time would go quicker than when we are on Earth. This happens because we move slower in a high-gravity place like Earth than a low-gravity-place like the moon. So Einstein thought about two duplicates of a person. One was on Earth and the other was in a rocket ship traveling at the speed of light through space. They stayed this way for 5 years.  When the duplicate in space came down to Earth he was much younger than the other one who had aged. This is an example of time travel, but not possible at the moment.
   But this is traveling into the future, what about the past? The past is much more complicated. There are many paradoxes that make traveling to the past impossible. Let's say you travel to the past and kill your great-grandfather as a kid. This would mean that you were never born, but you were born to kill you great-grandfather. Some people think you would vanish into thin air but other people think a parallel universe would be created where your grandfather was a different person. Also if you travel back in time before the time machine was built, that would mean there was no time machine and you couldn't travel before it was made. These paradoxes deem traveling towards the past impossible but people always find a way to prove science wrong.
   This ends the question, but if you have any other ideas about this or want a question answered, all you need to do is to respond.

 

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