8. What do you mean by light year?

1.	8. What do you mean by light year?
Answer» A light-year is defined as the measurement of length or the distance light travels in a vacuum in a year. One light-year is close to 6 trillion miles.Example of a light-year\tReflected sunlight travelling from the moon’s surface takes 4.04 × 10-8\xa0light-years to reach the earth.\tIt takes 1.58 × 10-5\xa0light-years for light from the Sun to reach the earth.

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