500,000,000 nanometers is approximately 0.0000 light-years. This shows how incredibly small nanometers are compared to the vast distance of a light-year.

This conversion is mainly for illustrating extreme scale differences, often in educational contexts or scientific comparisons between the microscopic and the cosmic.

A nanometer is one billionth of a meter. It's so small that you can't see it with a regular microscope; you need an electron microscope.

A light-year is the distance light travels in a vacuum in one Julian year (365.25 days). This is approximately 9.46 trillion kilometers or about 5.88 trillion miles.