There are at least 63 known moons orbiting Jupiter as of 2015. Europa, Ganymede, Io and Callisto are the largest four of these moons and are known as the Galilean moons. Ganymede is also the largest moon in the solar sys... More »

According to NASA, Jupiter has 50 officially recognized moons and 17 provisional moons, all of which are held in orbit around the gas giant by its immense gravity. The four largest of these moons are known as Galilean sa... More »

A moon is a natural satellite consisting of solid material that naturally orbits a planet or dwarf planet. Although the Earth has just one moon, there are other planets that have more, and some that even have none. Moons... More »

According to NASA, Jupiter has 50 officially recognized moons and 17 provisional moons, all of which are held in orbit around the gas giant by its immense gravity. The four largest of these moons are known as Galilean sa... More »

According to NASA, about 1000 Earths can fit inside Jupiter. The massive fifth planet is large enough to hold all the planets in the solar system easily. More »

Jupiter is slightly over 1,321 times more voluminous than the Earth, and its equator is roughly 11 times bigger than the Earth's equator. Measured by mass, Jupiter is the largest planet in the solar system. More »

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Jupiter has a dry, thick atmosphere; high-speed winds, turbulence and long-lasting storms are common. The weather on Jupiter is much different from that found on a rocky planet such as the Earth. More »