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7 March, 14:44

What is a light-year?

A) The distance light travels in one earth year

B) The distance light travels from the sun to the earth

C) The time it takes to travel across the universe

D) The distance the light travels in one orbit of the moon

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Answers (1)
  1. 7 March, 17:32
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    The answer is (a)

    Explanation:

    a light year is a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 * 1012 km (nearly 6 trillion miles).
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