A light-year is the distance light travels in a vacuum in one Julian year (365.25 days). It's a unit of astronomical distance.

There are approximately 740,740,740,741 inches in one light-year. This shows how small 500,000,000 inches is in comparison.

This conversion is very small because an inch is a very small unit of measurement, while a light-year represents an incredibly vast distance in space.

While not for direct calculations in everyday life, this conversion is useful for educational purposes and to grasp the immense scale of cosmic distances by comparing familiar units to astronomical ones.