A light-year is a unit of distance measurement based on the travel of light energy, undisturbed in a vacuum, over the course of one Earth year. A light year is about 9.5 quadrillion meters long.

This article is a stub relating to science. You can help our database by expanding on it.

External linkEdit

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.