If you sail in a spaceship with a speed close to the speed of light per hour, your life will be much longer than that of people on earth? If you sail in a spaceship whose speed is close to the speed of light per hour, your life will be much longer than that of people on earth. There is a potential field where the energy of matter will change with the change of speed. Therefore, the change and comparison of time is based on the speed of matter. This is why time is one of the elements of four-dimensional space?

If you sail in a spaceship with a speed close to the speed of light per hour, your life will be much longer than that of people on earth? If you sail in a spaceship whose speed is close to the speed of light per hour, your life will be much longer than that of people on earth. There is a potential field where the energy of matter will change with the change of speed. Therefore, the change and comparison of time is based on the speed of matter. This is why time is one of the elements of four-dimensional space?

Time in space is absolute, but time of object is relative, because object can change with speed