is the fifth largest natural satellite in the Solar System and is about 384,400 km away from Earth., *** is a gas giant, like Jupiter, composed mainly of hydrogen and helium, without a solid surface., Temperatures on *** can vary drastically, dropping to as low as -125°C at night near the poles., *** has more than 79 known moons, including four large moons called the Galilean moons:, Temperatures on *** can drop to -214°C, making it one of the coldest planets in the Solar System., A day on *** (the time it takes to rotate on its axis) lasts about 59 Earth days, while a year (the time it takes to orbit the Sun) lasts only 88 Earth days., *** has a faint and dark ring system that was first discovered in 1977., *** has a thick atmosphere composed mainly of carbon dioxide, with clouds of sulfuric acid, making it extremely dense and opaque.,

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