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

10,000 meters is equal to 10 kilometers, a distance often traveled on Earth.

This is because a light-year is an enormous distance, and 10,000 meters is a very small distance in comparison.

This specific conversion is rarely used in everyday life, but understanding the relationship helps grasp the immense scales of the universe.