>>17
Time slows down as you near the speed of light, and would effectively allow you to be near the same age and return to a far distant future on Earth/another planet.
Of course, you'd have to be traveling at the speed of light, turn around, and do it all over again from a fuel source within the vehicle.
However, if you wanted to just travel at the speed of light and time pass the same speed as it would on Earth, a "hyper drive" would be needed to contract the space in front of you, and expand it behind you, creating a sort of time pocket.
Who needs to shut their mouth, eh?