Storm world
Jupiter's Great Red Spot is a huge storm that has lasted for a very long time. It is wider than Earth.
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Planet lesson
Jupiter
Gas giant
Jupiter is the biggest planet. It is a gas giant with colorful cloud bands and many moons.
Kid fact
More than 1,000 Earths could fit inside Jupiter.
Jupiter and Io Together
Day
9.9 hours
Year
11.9 Earth years
Moons
95
Temperature
-110 C cloud tops
Gas giant
Jupiter does not have a solid surface like Earth. It is mostly hydrogen and helium, with deeper layers under crushing pressure.
Many moons
Jupiter has dozens of moons. Four large ones, Io, Europa, Ganymede, and Callisto, were first seen by Galileo in 1610.
Solar system shield
Jupiter's powerful gravity shapes the paths of many small objects. Scientists study it to understand how giant planets affect a solar system.
Look closely
Find the striped cloud belts and the Great Red Spot. Then compare Jupiter with Earth to imagine its enormous size.
Watch and learn