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Jupiter

Jupiter is the fifth planet from the Sun, orbiting between Mars and the Asteroid Belt and Saturn. It's the largest of the nine planets, so large in fact, that about 1300 earths could fit inside of the gaseous planet. Jupiter gets its name from the King of the Roman Gods. It contains more mass than the other eight planets combined, that's 300 times the size of Earth. Jupiter has no solid surface, instead, the planet is made of hydrogen and helium, which makes it a gas giant. Jupiter radiates more energy into space than it receives from the sun. It also rotates very fast, making a day on Jupiter only 10 hours long, and one year on the planet is 12 Earth years long. The planet is also home to the Great Red Spot, a giant storm that is almost three times the size of Earth. Jupiter has 95 known moons, the largest four are Ganymede, Callisto, Io and Europa, which are either the size of Earth's moon or larger, the largest of those four moons mentioned, Ganymede, Jupiter's largest moon, is larger than Mercury and has its own magnetic field. The planet has the strongest gravity of all nine planets, so a 100 pound human on Earth weights more than 250 pounds on Jupiter. Jupiter is also the planet keeping asteroids from hitting Earth.

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