C is a universal constant that describes everything’s velocity through spacetime. C in space = (roughly) 300 million m/s. C in time is 1 second per second. If you accelerate in space, you decelerate in time. If you are near a gravitational well, like Earth, gravity has the same effect on you as speed through space. So it slows down time. This causes your head and feet to age at different rates. As you approach a black hole, gravity gets more extreme, slowing down time.
Latest Answers