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Solar System past the center of the Earth is solar system (system geosentris), but the theory has many weaknesses in explaining the nature of planetary movement. Nicolaus Copernicus geosentris reorganize the system into heliosentris, the sun as the central solar system. The Solar System, the sun and the system of celestial body that is tied to the solar gravitation law. The member of Solar System :

Planet
The requirements according to the International Austonomical Union (IAU) that the celestial body is called a planet, namely:
1. Orbit on stars.
2. Have a sufficient self-gravity to form shapes to be in a state of balance
3. Not strong enough to start fusion reactions essentially
4. The Orbit don’t join up with another celestial body orbit.

There are 8 planets in Solar System: Merkurius, Venus, Bumi, Mars, Jupiter, Saturnus, Uranus, Neptunus.

How about Pluto ?

As we know based on the IAU decision on 24 August 2006, we have left that Pluto is a planet. Pluto is found in February 1930 by Cylde William Tambaugh (1906-1997), killed as a planet because it does not meet the three conditions classified as a planet dwarf planet. The orbit of Pluto join up with another celestial body, namely the planet Neptunus.

Satellites
It is the object space that encircle the planet.
Movements planet are:
1. Rotate the axis
2. Revolt against the planet
3 Evolved along with the planet to the sun Almost all of the planet in the solar system has a satellite, except merkurius and venus

Asteroid

s a small celestial body that encircle the sun. Most of the path of the asteroid path is the planet mars and Jupiter. Differences asteroid and the planet are on the size, shape asteroid smaller than a planet. Asteroid are also often called minor planet. Asteroid yang terbesar adalah Ceres dengan diameter 940 km. The largest asteroid Ceres with diameter 940 km. Number of huge asteroid about 100.000 pieces that have a diameter of more than 20 km is only 30 units. Contohnya : Ceres, Pallas, Vesta, Higeia, Interamnia dan Davida. For example: Ceres, Pallas, Vesta, Higeia, Interamnia and Daisy. Form of asteroid-like orbit ellipse, because the number of lots to form a ribbon asteroid. Some have asteroid orbit deviate from the main orbit between mars and Jupiter Trojan asteroid that is. Asteroid Trojan adalah kumpulan asteroid yang orbitnya berimpitan dengan orbit planet Jupiter. Trojan asteroid is a collection of asteroid the axis orbit with the planet Jupiter.