Planets
Jupiter
The largest planet in our Solar System
About Jupiter
Jupiter is a gas giant and the largest planet in the Solar System. Its Great Red Spot is a storm larger than Earth that has been raging for centuries.
Scientific Facts
Jupiter has a diameter of 139,820 km. Its mass is 318 times Earth's. It has 95 known moons. The Great Red Spot is a storm over 400 years old.
Interesting Facts
Jupiter's moon Europa may have a subsurface ocean. Jupiter has the strongest magnetic field of any planet.
Fun Facts
Jupiter has faint rings. Its moon Io has active volcanoes. Jupiter's day is only 10 hours long.
Discovery
Known since ancient times.