What is Light year? How to convert Light year to KM?

Light year

Light year is defined as the total distance travelled by light in one year.

So we can conclude the light year is a unit of distance. It is the distance a light photon travels in the vacuum in one Julian year. It is denoted by Iy. The value of one light year is constant.

• 1 light year = 9.4607 ×10^12 km
• 1 light year = 5.88 ×10^12 miles.

A light year is a convenient unit of measurement of large distances. It is used to represent astronomical distances generally.