Time travel is on the brink of happening.
Time travel could soon be a reality according to Proffesor Ronald mallet. He has created blueprints for a time machine. His Theory is treating time as a dimension explaining at the very least you can send sub atomic particles through time. Another way to time travel is by using a black hole which is a collapsed star so massive and dense that at its core not even light can escape.
Professor Ronald Mallets idea starts with powerful lasers placed in a circle or loop which Einstein predicted. This creates a region of space and time that are linked together. If the loop has the past, present and future then you could close the loop of time and go back in time.