This is a bit of a trick question! Our solar system has one star, the Sun, and it's the dominant force that shapes and sustains the entire system. Here's how:

* Gravity: The Sun's immense gravity holds all the planets, moons, asteroids, and other objects in orbit around it. This gravitational pull is the main force that keeps everything in place.

* Energy: The Sun is a giant nuclear fusion reactor, constantly converting hydrogen into helium and releasing tremendous amounts of energy. This energy radiates out in the form of light and heat, providing:

* Light and warmth: The Sun's energy is what makes life possible on Earth and warms the other planets.

* Solar wind: This stream of charged particles from the Sun constantly flows throughout the solar system. This can have both beneficial and harmful effects, such as creating aurorae but also disrupting satellites.

* Formation: The Sun formed first from a giant cloud of gas and dust, and the remaining material eventually coalesced into the planets and other objects. The Sun's presence and influence were crucial for their formation.

In short, the Sun is the center of our solar system and its energy and gravity are what give it its structure and function.

Let me know if you'd like to explore any of these aspects in more detail!