Light years are smaller in distance than astronomical until.

A light year is the distance light travels in one year, while an AU, otherwise known as an astronomical unit, is the distance between the Sun and the Earth. A light year is approximately 9,500,000,000,000 km. An AU is 149,600,000 km. As you can probably tell, an AU is much shorter than a light year.

I’m not exactly sure what your trying to ask, but if it’s how an organelle is similar to a body system or a part a nucleus is like a in function. but i don’t fully understand what you’re trying to ask