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Diagram of Jupiter

A series of photographs taken by Voyager 1 as it approached Jupiter, made into an animation

Jupiter is the largest planet in the Solar System. It is the fifth planet from the Sun. Jupiter is a gas giant because it is so large, and made mostly of gas. The other gas giants in the Solar System are Saturn, Uranus, and Neptune.

Jupiter was discovered by Galileo Galilei in 1610 with a small telescope. The planet has a Great Red Spot which is located at 22 degrees south of Jupiter's equator, it produces wind-speeds up to 432 km/h (268 mph).