The solar system consist of star and the objects that travel in the orbit around it.
Our solar system consists of the Sun (the star) at the centre, eight planets and their natural satellites (For example, Moon is the natural satellite of our planet Earth), dwarf planets, asteroids, comets and other space rocks and dust. All these objects are held together as a group by sun's gravity.
The eight planets are - Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Our Solar System is a part of a galaxy. It is known as The Milky Way. It is a spiral galaxy.
Our sun is not unique in the universe. It is common middle sized yellow star. Many of these stars have their own planets, moon, asteroids. Our solar system was formed about 4.5 billion years ago. The planets,comets and asteroids are the loose objects, left over from the formation of the sun. The name Solar System is derived from the ancient Roman name 'Sol'. The eight planets circle around the sun. This circular path is called an orbit.
The solar system made up of 2 parts.
1. Inner solar system. This contains four planets namely Mercury, Venus, Earth and Mars.
2. Outer solar system. This contains four planets namely Jupiter, Saturn, Uranus and Neptune.
The outer and the inner solar systems are separated by an asteroid belt.