Which of the following best describes a solar system?

A solar system is best defined as a star along with its surrounding planets and celestial bodies. This definition emphasizes the relationship between a central star—like our Sun—and various objects that are gravitationally bound to it, including planets, moons, asteroids, comets, and other space debris.

The concept of a solar system typically revolves around one star. For example, the Solar System consists of the Sun and all the celestial bodies that are influenced by its gravity, including the eight planets, their moons, and smaller objects. This structure showcases not only the gravitational dynamics at play but also the systematic arrangement of these bodies as they revolve around the central star.

In contrast, the other options describe different astronomical concepts. A collection of multiple galaxies refers to larger cosmic structures called galaxy clusters. A group of moons orbiting a planet indicates a specific feature of a planet but does not encompass the entire solar system structure, which includes the star and all orbiting bodies. Lastly, the space between galaxies describes the vast, mostly empty regions known as intergalactic space. Thus, option B accurately captures the essence of what constitutes a solar system.