The Solar System is called a "system" because it consists of a central star (the Sun) and a collection of celestial bodies, including planets, dwarf planets, moons, asteroids, comets and meteoroids, that orbit around it. The term "system" implies that these celestial bodies are gravitationally bound to the Sun and move in predictable paths, forming an organized and cohesive structure.

Additionally, the concept of a "system" highlights the interconnectedness and dynamic interactions within the Solar System. The gravitational forces between the Sun and the celestial bodies, as well as the mutual influences and effects among the various components, create a complex system of movements, interactions, and phenomena.

The term "Solar System" emphasizes the central role of the Sun in organizing and influencing the behavior of the celestial bodies within its sphere of influence. The Sun's gravitational pull keeps the planets, dwarf planets, moons, and other objects in their respective orbits, shaping the overall structure and dynamics of the system.

Therefore, the Solar System is called a "system" due to its hierarchical organization around the Sun, the intricate gravitational interactions among its celestial bodies, and the comprehensive framework that describes their motions, relationships, and interactions.