Unified search
Results for “light-year”
Mathematics
Light-year
A light-year is a unit of distance used in astronomy to measure vast interstellar and intergalactic scales, defined as the distance light travels in a vacuum over one Julian year.
MathematicsParsec
The parsec is an astronomical unit of distance defined as the distance at which one astronomical unit subtends an angle of one arcsecond, approximately 3.26 light-years.