Jupiter is the fifth planet from the star Sol at a distance of 5.203 A.U.. It is 89,317 miles in diameter. Its day equals 0.41 Earth days and its year equals 11.86 Earth years. Jupiter is a gas giant with no solid surface. The temperature at Jupiter's cloud tops is -235 (F, its gravity is 2.34 that of Earth, and its magnetic field is 20,000 times that of Earth. It has a narrow ring and many moons. The four largest moons are larger than the planet Pluto. The Jupiter colonies were established on Jupiter's larger moons.