Question

what is light year?
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Answer 1

Explanation:

The light-year is a unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometres or 5.88 trillion miles.

=> As defined by the International Astronomical Union, a light-year is the distance that light travels in vacuum in one Julian year

Answer 2

Answer:

The light-year is a unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometres or 5.88 trillion miles. As defined by the International Astronomical Union, a light-year is the distance that light travels in vacuum in one Julian year.