A solar system, or star system, consists of one or more stars and planets orbiting a common barycentre. All objects included in a solar system are all held together with gravity, and the main source of gravity is the star. Technically, the term refers to the star around which Earth orbits (the Sun, which is called Sol), but either "solar system" or the more general term "star system" can be used to refer to any planet-star pair. They are found within stellar bubbles. There are 150 billion+ solar systems in the Milky Way.
Observable Universe → Pisces-Cetus Supercluster Complex → Laneakea Supercluster → Local Group → Milky Way → Orion Arm → Gould Belt → Local Bubble → Local Interstellar Cloud
Our Solar System is a planetary system located within the local interstellar cloud, 26.500 light years away from the center of the Milky Way Galaxy. It contains the following planets, dwarf planets and stars:
Our Solar System. (open image in new tab to it full).
Our Solar System ends in the Oort Cloud, because that;s where the Sun's gravitational pull can reach. Here, we see the Oort Cloud, beyond the planets and beyond the Kuiper Belt.
These objects are not smaller than elementary particles like the order would suggest. In reality, this chain diverges from the Astronomical Objects chain.
