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Jupiter is the largest planet in our solar system and orbits the Sun between Mars and Saturn. Named for the king of the Roman gods, its mass is equal to the mass of 317 Earths. It is so big that it would take 11 Earth-sized planets placed in a straight line next to each other to equal Jupiter's diameter. A planet this has many moons, given the size and gravitational pull. There are 79 confirmed moons around Jupiter. Many of those moons are asteroids captured by gravity, but four of the moons are bigger than the dwarf planets, making them significant in their own right. 53 of the moons have names. 26 of the moons are awaiting them.

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1. The Galilean Moons

The largest moons are known as the Galilean moons. The astronomer, Galileo Galilei discovered them in 1610. These are the largest of all Jupiter's moons. They include the moons Callisto, Europa, Ganymede, and Io. These four moons are the most massive objects in our solar system after the Sun and the eight planets.

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