الأربعاء، 23 ديسمبر 2009

Saturn


Saturn
Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. Saturn, along with Jupiter, Uranus and Neptune, is classified as a gas giant . Together, these four planets are sometimes referred to as the Jovian, meaning "Jupiter-like" . Saturn is named after the Roman god Saturn , and Saturn is symbol represents the god's sickle . Saturn's feature that it has a loops from ice and dust orbit around it in one level which give it a distinctive form .
Saturn is probably best known for its system of planetary rings, which makes it the most visually remarkable object in the solar system. They extend from 6 630 km to 120 700 km above Saturn's equator, average approximately 20 meters in thickness, and are composed of 93 percent water ice with a smattering of tholin impurities, and 7 percent amorphous carbon. The particles that make up the rings range in size from specks of dust to the size of a small automobile. There are two main theories regarding the origin of Saturn's rings. One theory is that the rings are remnants of a destroyed moon of Saturn. The second theory is that the rings are left over from the original nebular material from which Saturn formed.
It's 1,426 billion KM away from the sun , and it has 60 moon , and his mean radius is 60,267 KM , and the gravity is 8.96 . and the surface area is 44 billion 〖KM〗^2