Saturn, like Jupiter, is composed mostly of hydrogen and helium. However, deep into its core is a composition of iron. It is estimated to be twice the size of Earth. However, Saturn has the lowest density of any planet in our solar system! (0.69)
Like Jupiter, Saturn has an internal source of energy and generates twice as much energy as it receives from the Sun.
Saturn revolves around the sun once every 29.5 Earth years. In an average life of a human on Earth, Saturn would revolve 2.4 times.
Saturn is often called the ringed planet. The rings are composed of water and ice, and come in all sizes, from dust specks to boulder size chunks. There are up to one thousand ringlets extending some 47,500 miles into space. Saturn is among the most beautiful of the nine planets.
Saturn has some fifteen moons and boast of the second largest moon behind Jupiter's Ganymede.