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JUPITER

The largest planet in the Solar System, a massive world of gas, storms and extreme atmospheric dynamics.
Jupiter
JUPITER · GAS GIANT
778.5 million km
AVERAGE DISTANCE FROM SUN
139,820 km
EQUATORIAL DIAMETER
11.86 YEARS
ORBITAL PERIOD
9 h 56 min
ROTATION PERIOD
1.33 g/cm³
AVERAGE DENSITY
~−110°C
CLOUD-TOP TEMPERATURE
THE GALILEAN MOONS
Explore Jupiter's four largest moons
THE LARGEST PLANET
Jupiter is the largest planet in the Solar System. It is a gas giant composed primarily of hydrogen and helium. Its atmosphere contains enormous cloud bands, powerful jet streams and some of the most extreme storms known in the Solar System. Jupiter rotates incredibly quickly. One complete rotation takes less than 10 Earth hours, making it the planet with the shortest day in the Solar System. Deep inside Jupiter, pressure becomes so extreme that hydrogen behaves in an unusual metallic state. Jupiter also has a very powerful magnetic field and a huge system of moons.
GREAT RED SPOT
A gigantic storm larger than Earth that has persisted for centuries in Jupiter's atmosphere.
METALLIC HYDROGEN
Extreme pressure deep inside Jupiter causes hydrogen to enter a metallic state capable of conducting electricity.
GALILEAN MOONS
Io, Europa, Ganymede and Callisto are Jupiter's four largest moons.
DID YOU KNOW?
Jupiter is so massive that it contains about 2.5 times the mass of all the other planets combined.
IMAGE: NASA / JPL / WIKIMEDIA COMMONS