The closest star to our solar system is alpha centauri, Ask an Expert

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The closest star to our solar system is Alpha Centauri, which is 4.30 light years away. A spaceship with a constant speed of 0.800c relative to the Earth travels toward the star.

a) How much time would elapse on a clock on board the spaceship?

b) How much time would elapse on a clock on the Earth?

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