Technically, you could age slower than the rest of the world. For example: say someone is riding in a train. They are bouncing a ball. It goes 3 feet down, and 3 feet up in one second. So, the ball is traveling 6 feet per second. But, the train is moving 80 feet/second. A bystander looks in and uses a radar gun on the ball. It scans in at 86 feet/second. Someone inside the train also has a radar gun and the ball scans in at 6 feet/second. Which gun is correct?
Trick question: both. So, if you travelled at light speed, in space of course, you would age much slower. This is Einstein’s theory of relativity.