FANDOM


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.

History and specificsEdit

A light year is about 9.5 quadrillion meters long.


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

AppendicesEdit

ReferencesEdit

External linkEdit