Jupiter Largest planet with 4 large moons (Galilean) - miniature solar system (64 moons altogether). Similar to star in composition – if 50x more massive,
Jupiter: The Giant King. Jupiter Bio/Facts Diameter: 139,822 km Relative Mass (Earth = 1): 317.8 Density (kg/m 3 ): 1330 Distance from Sun (AU): 5.2 Length.
