A light-year is the distance light travels in one year, around 9461 billion kilometres, 5879 billion miles, or 0.3066 parsecs.
en.wikipedia.org The emitting region is at least a tenth of a light-year away, and most likely is 5 light-years away.
astronomynow.com The distance to this star, as determined from parallax measurements, is approximately with a 40 light-year margin of error.
en.wikipedia.org A light-year is a unit of distance, not time, approx. 5,800,000,000,000 miles.
www.gizmag.com For example, the light-second, useful in astronomy, telecommunications and relativistic physics, is exactly metres or of a light-year.
en.wikipedia.org