Jupiter is the fifth planet from the Sun and the largest planet within our Solar System. Jupiter is classified as a gas giant along with Saturn, Uranus and Neptune. Together, these four planets are sometimes referred to as the Jovian planets.
Surrounding the planet is a faint planetary ring system and a powerful magnetosphere. There are also at least 63 moons, including the four large moons called the Galilean moons that were first discovered by Galileo Galilei in 1610. Ganymede, the largest of these moons, has a diameter greater than that of the planet Mercury.
- ↑ As seen in the Space Sentinels, TV series (1977) episode, The Jupiter Spore.
- ↑ Referenced in The Superman/Aquaman Hour of Adventure (1967-1968) episode, The Twenty-Third Dimension