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A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, 12 years have elapsed on earth,

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A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, 12 years have elapsed on earth, and 8.3 years have elapsed on board the ship. How far away (in meters) is the planet, according to observers on earth? Earth Ship Earth Ship time time time time Spaceship departs earth Spaceship arrives at distant planet

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