Jupiter

Jupiter is a large gas giant in the Sol System and is the fifth planet.

Structure and atmosphere
Jupiter's dense atmosphere gradually thickens farther into its interior, and finally becomes a liquid which rapidly heats up and turns to metallic hydrogen, which in a way resembles the metal mercury. A possible core lies in the center, surrounded by some layers of both hydrogen and oxygen.

Jupiter's atmosphere is very active, with many storms, shown as red or white spots. A massive storm system called the Great Red Spot has celebrated its 1000th anniversary in April 2776. The system merged with a smaller system of similar intensity known as the Small Red Spot.