Outer Planet Project
Jupiter's diameter is 86,881 miles and 139, 822 km. Jupiter is also the largest planet in the solar system. Jupiter is about 90 percent hydrogen and 10 percent helium. It takes Jupiter about 12 years to make one complete orbit. Jupiter has about 63 moons. Jupiter's 4 largest moons are Io, Europa, Ganymede, and Callisto. A thick layer of liquid surrounds Jupiter.
Jupiter - NASA - Voyager - Recording (The Best Video)