4. Light-years are used to measure distances in space. What does it mean when two stars are 150 light-
years apart?
A. The stars are 150 million kilometers from each other.
B. One of the stars formed 150 years before the other star.
C. It takes 150 years for light to travel from one star to the other.
D. It would take 150 years for a spaceship to travel between the stars.
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4. Light-years are used to measure distances in space. What does it mean when two stars are 150 ligh...
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