Suppose astronauts are in a spaceship moving relative to the Earth at a significant fraction of the speed of light. (a) Do they observe the rate of their clocks to have slowed? (b) What change in the rate of Earth-bound clocks do they see? (c) Does their ship seem to them to shorten? (d) What about the distance between stars that lie along their motion? (e) Do they and Earth-bound observers agree on their velocity relative to the Earth?