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Have you ever wondered if time travel will ever be possible? Well as you will find out, time travel may by much more practical than you thought. To understand the principal of time travel, you must know what time, itself is first. Time, as we know it, is known as the fourth dimension to our universe with the others being up down, right left, and backward-forward. When traveling anywhere in our universe, time slows as an object reaches the speed of light, according to Einstein’s theory of special relativity. This