I am trying to get this idea of Time dilation understood. If there exists only two objects in a Universe and one object is stationary and the other object is moving at 99 % the speed of light. Their clocks were both synchronized when both objects were stationary relative to each other. Then the second object instantaneously accelerated to 99 percent speed of light. I believe that the person located in the speeding object would see his clock moving normally and would not see that it is moving slower than the person in the object that is stationary. Let us say this speeding object person then moves at 99 % speed of light for 10 minutes and then instantaneously stops and checks his clock. Will the fast moving person's clock have lost some time and moved slower than the person in the stationary object?