How many years is a light year

10,108 earth years equals 1 light year

A "light year" is not an amount of time.

It's an amount of distance ... the distance that light travels

through space in one year.

1 light year = 5,878,625,372,000 miles

(rounded to the nearest thousand miles)

1 light-year = 9,460,730,473,000 kilometers

(rounded to the nearest thousand kilometers)