Question

What is a light year ?


GIVE ONE SENTENCE ANSWER​

Answer 1

Answer:

A light-year, alternatively spelled lightyear, is a unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers 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:

A light year is the distance that light travels in one year .

Explanation: