Question

Light year is a unit of ???...

Answer 1

hey mate ur answer is here:)The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days).
hope it helps☺

Answer 2

The distance travelled by light in one year is called one light year.

$\textbf{1 Light year = 9460 billion kilometre }$

Light year is the unit of distance.