One light year is equal to the distance that light travels in one year
(it is about ten trillion kilometers or six trillion miles).
A light year is a unit of distance.
The distance light travels in one year is known as light year.
A light-year is a unit of length used to express astronomical distances and measures about 9.46 trillion kilometers (9.46 x 1012 km) or 5.88 trillion miles (5.88 x 1012 mi)
