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Less than one-third the mass of Jupiter, Saturn is still an enormous planet. Saturn has a mass of about 95 Earths and has a very rapid rotation rate. Because its rotation rate is so rapid, it has an obvious oblateness. Saturn is well known for having more moons than any other planet in our solar system and a spectacular ring system. At least 20 moons have been spotted to date. Their reflective light suggest that most are covered with snow and ice and are probably made almost entirely of water ice. Saturn's largest moon, Titan, is the most intriguing of all Saturn's moons because of its gigantic chemical content. Scientists believe that the atmosphere on Titan may be the same as that of Earth's some billions years ago which eventually led to life on Earth and thus, possibly future life on Titan.