Here's why:

* Gravity and Orbits: The Sun is much more massive than any of the planets in our solar system. This means it has a much stronger gravitational pull. Instead of the Sun rotating around the planets, the planets are held in orbit around the Sun by its gravity.

* Center of Mass: While the planets do exert a tiny bit of gravitational pull on the Sun, their combined force is not enough to make the Sun move significantly. The Sun and the planets actually orbit around a common center of mass, which is located very close to the Sun's center because it is so much more massive.

In summary: The Sun is the dominant gravitational force in our solar system, and the planets orbit around it, not the other way around.