Kamis, 07 April 2011

solar systems : Solar System

The solar system consists of the sun, the nearest star to us, and the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto, as well as numerous comets, asteroids, meteoroids, and the interplanetary medium. The nine planets, along with their satellites, revolve around the sun in definite orbits. The planets and the satellites are said to be the members of the solar family or the solar system.It is believed that the sun, the center-piece of the solar system, was born

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