Sign up for FlowVella
Sign up with FacebookAlready have an account? Sign in now
By registering you are agreeing to our
Terms of Service
Loading Flow
Light years
Light years is a unit of distance that is defined as the distance that light travels in one year.
One light year is approximately 9.5 trillion kilometers or 5.9 trillion miles.
The galaxy we live in is about 100,000 light years across.