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Astronomers discover a planet orbiting around a star similar to our sun that is 32 light years away. how fast must a rocket ship go if the round trip is to take no longer than 64 years in time for the
Astronomers discover a planet orbiting around a star similar to our sun that is 32 light years away. how fast must a rocket ship go if the round trip is to take no longer than 64 years in time for the astronauts aboard?