Sixth planet from the Sun, Saturn is the second largest planet in our solar system at a mean distance of 1.4 billion km from the Sun. It is one of the four gas giants and is composed mainly of hydrogen with no solid surface. Saturn also has a famous ring system which stretches to over 136,000km from the centre of the planet. The rings consist of rock, frozen gas and water ice.
There are thought to be more than 60 moons around Saturn. The planet's largest moon Titan has been of particular interest to astronomers and scientists as it is the only moon in the solar system known to have an atmosphere. The Cassini-Huygens probe recently visited Saturn and took a plethora of detailed photographs of the planet and its rings. The Huygens probe detached and headed down through the atmosphere of Titan, taking photographs and readings as it went.
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