It isn't possible to go into the future, but it is possible to go so fast, that time around you is slowed down, so that in a sense, things are aging faster around you, while you are still in a stasis per-say. Sounds crazy doesn't it? That's what science has to say about that :3.
You need to check out the history channel. A story they had a week or so ago on the show called TheUniverse. They done an experiment that actualy showed going back in time is possible It was only a coupe seconds But they have to start somewhere
Time travel is easy you need a light speed ship to get to a black hole orbit the black hole for 2weeks and back on earth you just traveled 500years into the future or just travel at light speed because time will slow at light speed and black hole gravity slows time as well
Ever heard of the domino effect? One falls over, then another then another. Even one tiny change in the past could catastrophically effect many things and people. Just one person travelling to the past is a change. Most people cannot understand. Watch the movie Mr. Destiny. Just think for a minute.. What if you caused your parents to never meet each other? They would never have you. So if you never existed, How could you grow up and go back through time? This is called a time paradox.