Help make Alexa smarter on Alexa Answers. Sign in with Amazon

Science

What is a light year?


A light year is a distance measurement indicating how far light travels in a vacuum over the duration of one Earth year (365.25 days). It is about 9.46 trillion km, or 5.88 trillion miles.

{{ relativeTimeResolver(1636398690888) }}

LIVE
points 23
Rating

Similar questions

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world

LEARN MORE