3. The Moon is 384,000 km from the Earth. Imagine a clock put on a spaceship that moves from the Earth to the Moon at a speed of 0.6 times the speed of light. What will the clock read for a time when it reaches the Moon, if it read 0 at the start of the trip? Compare this value with the value of a clock on Earth that started when the rocket left, and stopped when the rocket reached the Moon