an artists rendition of the triple star system: HD 188753
A Star system or Solar System was(is) a region of space where a star can be found at the center (most of the time) with various objects orbiting around it. These include Planets, asteroids, comets dust and debris and on some not so uncommon occasions other stars like the protostar Lux in the White Sun system. also in some cases there are binary, or trinary, or multaple stars orbiting each other, however trinary and up is rare.
the solar system in real life