Understanding the stars, the sun, the solar system and the planet

On a clear night, we could see the stars in the sky. Stars including celestial objects that emit their own light. Planets and satellites simply reflect light received from a star. The sun is a star whose distance is closest to our planet. Sun surrounded by planets and celestial bodies. The solar system is a collection of planets and the sun and other celestial bodies, which circulate around the sun. The sun as the center of our solar system.

Planets are celestial bodies around the sun with a certain trajectory and diameter greater than 4,000 km. Planet reflected light received from the sun. In our solar system there are 9 planets, namely Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.

Circulation of each planet around the sun formed ovoid or elliptical. It is the center of the circulation path of the sun. Regular circulation so that no possible collision.