Question

2. What is a light year?



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Answer 1

Answer:

Light-year is a large unit and equals the distance travelled by light in one year. Hence, the large distances are expressed in light-years. If a star is located 8 light-years away from the earth, it means that the distance between the star and the earth is the distance light would travel in eight years.a light-year is a unit of length that is equal to the distance light travels in one year in the vacuum of space: about 5.88 trillions miles

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