A "Star System" is a group of celestial bodies that are bound together by gravity, typically centered around a star. The most well-known example is our own Solar System, which includes the Sun and its orbiting planets, such as Earth, Mars, and Jupiter. Star systems can also contain moons, asteroids, comets, and other objects. Star systems can vary in size and complexity. Some may have only one star, while others can have multiple stars, known as binary or multiple star systems. These systems can also host planets, which may be rocky like Earth or gas giants like Jupiter.