Planet Details
Jupiter
The largest planet in our solar system, a gas giant with a famous Great Red Spot, which is a giant storm raging for centuries.
Key Facts
Type
Gas Giant
Day Length
9.9 Hours
Year Length
11.9 Earth Years
Moons
95+
Course Information
Jupiter is the fifth planet from the Sun and is more than twice as massive as all the other planets in the Solar System combined. It is composed primarily of hydrogen, with a quarter of its mass being helium. It may have a rocky core of heavier elements, but like the other giant planets, Jupiter lacks a well-defined solid surface.