Suppose that there is a spaceship that leaves the solar system at a velocity of v = (3/5)c, headed for a planet that is 20 c • yrs away. Assume that the Sun and the planet are both at rest and that their clocks have been synchronized such that both read zero when the spaceship leaves.  When the tail of the spaceship reaches us, what should the clocks in the ship's tail and nose read?

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