The center of the solar system is the sun and the rest of the system consists of the objects that are connected to the sun by the forces of gravity. Our solar system has eight planets which have 166 moons known today, five smaller dwarf planets and billions of smaller bodies, for example like asteroids, comets, meteoroids and interplanetary dust.
The solar systems is divided into the following regions starting from the sun, first of all are the four terrestrial inner planets, then the asteroid belt, after what there are four gas giant outer planets, followed by the Kuiper belt, the scattered disc and in the end a yet to be proven Oort cloud. The solar system is filled with a flow of plasma from the sun which creates the heliosphere that is up to the middle of the scattered disc.
The eight planets in our solar system starting from the sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Until the middle of 2008 Pluto was considered to be the smallest planet in the solar system which was located the furthest from the sun. Now five small objects in the system are called dwarf planets: Ceres, Haumea, Makemake, Eris and then also Pluto. The latter four orbit the sun further than Neptune.
Six planets and three dwarf planets are orbited by “moons” which are actually natural satellites. The outer planets are rounded by planetary rings of dust and particles.
