Jupiter Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a gas giant with a mass one-thousandth that of the Sun, but two-and-a-half times that of all he other planets in the Solar System combined.The distance is about 750 mil km away from the Sun.It takes Jupiter 12 years to orbit the Sun.Jupiter is 11 times bigger than Earth ,about 70k km .Jupiter's extremely dense and relatively dry atmosphere is composed of a mixture of hydrogen, helium and much smaller amounts of methane and ammonia. The same mixture of elements which made Jupiter also made the Sun. Jupiter has 79 known moonsJupiter has 53 named moons and another 26 awaiting official names. Combined, scientists now think Jupiter has 79 moons. Thank you