If a spaceship is moving at a relativistic speed past the earth, the people on Earth would believe that the time in the spaceship was moving slower. The people on the spaceship would believe the time on the Earth was moving slower. So what happens when the spaceship stops? Do both times revert back to normal? Because if the times just go back to the same speed, then the people on Earth would still be seeing the people in the spaceship only in the past... and that doesn't make sense. So what actually happens?