Jupiter
⭐ MasteredJupiter is the largest planet, a gas giant with a Great Red Spot that is a giant storm. It has dozens of moons including four large ones discovered by Galileo.
Jupiter has the shortest day of any planet: about 10 hours.
All about Jupiter
Jupiter is the largest planet in the Solar System. It is a gas giant made mostly of hydrogen and helium, and it is so big that more than 1,300 Earths could fit inside it. Its Great Red Spot is a giant storm that has raged for hundreds of years.
Jupiter has dozens of known moons. Four large ones, Io, Europa, Ganymede and Callisto, were first seen by Galileo Galilei in 1610. Europa may have a hidden ocean under its icy surface, which makes it a target for future life searches.
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Real-life uses of Jupiter
- Studying the formation of the Solar System
- Searching for possible life on its moon Europa
- Using Jupiter's gravity to guide spacecraft
Frequently asked questions about Jupiter
Is Jupiter a star?
No. Jupiter is a planet. It would need to be about 80 times more massive to become a star.
How long is a day on Jupiter?
Jupiter spins very quickly, so a day lasts only about 10 hours.
Does Jupiter have rings?
Yes, Jupiter has faint rings, but they are much less visible than Saturn's.