The system of the Sun and planets is called the solar system because "solar" refers to the Sun.

Here's a breakdown:

* Sol: The Latin word for Sun is "Sol."

* Solar: Anything related to the Sun is referred to as "solar."

* System: A system is a group of things that work together.

Therefore, the term "solar system" accurately describes the Sun and its orbiting planets as a system that revolves around the Sun.