Question

define light year and give it's numerical value​

Answer 1

Answer:

A light-year is a unit of distance. It is the distance a light photon travels in the vacuum in one Julian year. Denoted by ly, the value of one light-year is constant. The term light-year is often used in astrophysics to measure the distance between two astronomical objects.

Numerical value

One light-year is equal to: exactly 9,460,730,472,580.8 km (about 9.5 Pm). about 5,878,625,373,183.6 miles (about 6 trillion miles).

Answer 2

Answer:

The light-year is a unit of length used to express astronomical distances and measures about 9.46 trillion kilometres or 5.88 trillion miles. As defined by the International