I have had a theory about time and space travel, an example.. if you look at a star and it takes 75 years for that light to hit your eyes you are basically seeing 75 years into the past........now if you move away from that star at the speed of light in your eyes have you stopped time from your point of view? you are seeing the same light and it isnt advancing past you. In order for you to go back in time and be in the past you must travel faster than the speed of light away from a point but fold space in front of you faster than you are traveling away from said point. If that makes any sense