The closest known star to our solar system is Alpha Centauri, which is approximately 4.30 light years away. A spaceship with a constant speed of 0.800c relative to the earth travels from Earth to this star
(a) How much time would elapse during the trip on a clock on board the spaceship? (b) How much time would elapse during the trip on a clock on Earth?
(a) 3.23 y (b) 5.38 y
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