Physics is naturally a part of the universe. It's the fundamental science that describes how the universe works at its most basic level. Here's why:

* Everything is made of matter and energy: Physics explores the nature of matter and energy and how they interact.

* Everything is governed by laws: Physics investigates the fundamental laws that govern the universe, from the smallest particles to the largest galaxies.

* It's the foundation for other sciences: Physics is the basis for many other scientific disciplines like chemistry, biology, astronomy, and even fields like engineering and medicine.

Think of it this way: Physics is the language of the universe. It's the underlying framework that explains how everything around us operates, from the movement of planets to the behavior of atoms.