Here's why:
* Light-year: The distance light travels in one year. It's a huge distance!
* Meter: A standard unit of length, roughly the distance from your nose to the tip of your outstretched finger.
To illustrate the difference, imagine trying to express the length of a pencil in terms of the distance to the moon. It's not a meaningful comparison.
To make a comparison, you'd need to convert one unit to the other:
* Light-year to meters: One light-year is approximately 9.461 trillion kilometers (or 9.461 x 10^15 meters).
* Meter to light-years: One meter is a tiny fraction of a light-year, about 1.057 x 10^-16 light-years.