The light-year, sometimes written as "light year," served as a distance measurement in the field of astronomy. It represented how far light could propagate during a standard year, a span equivalent to about 9.5 trillion kilometers.
The light-year, sometimes written as "light year," served as a distance measurement in the field of astronomy. It represented how far light could propagate during a standard year, a span equivalent to about 9.5 trillion kilometers.