A light-year is a measure of the vast distance light travels in a year (about 9.46 trillion kilometers). 100 million centimeters (1,000 kilometers) is extremely small in comparison.

A light-year is used by astronomers to measure the immense distances to stars, galaxies, and other celestial objects outside our solar system.

There are 100,000 centimeters in one kilometer.

While 100 million centimeters is a large distance on Earth (1,000 km), it's insignificant when discussing distances between stars, which are typically measured in light-years.