Saturn was first visited by NASA's Pioneer 11 in 1979 and later by Voyager 1 and Voyager 2. Cassini {a joint NASA/ESA project} arrived on July 1, 2004 and will obit Saturn for as least four years.
There is no life on this planet.
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MarsA small number of meteorites {the SNC meteorites} are belived to have originated on Mars.Mars also is a planet that doesn't have life. The planet is made from ice and other gasses.