It is possible that an Earth-sized object crashed into Uranus and caused Uranus to rotate on its side.
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Only one: Voyager 2 in 1986.
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Planets get their color from what they are made of - their composition, and Uranus is made mostly of hydrogen, helium and methane. Methane is what gives Uranus its blue color.
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Uranus has #uranusmooncount# moons.
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Astronomer William Herschel discovered Uranus in 1781.
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Uranus rotates east to west. Uranus is one of two planets that rotate in the opposite direction than most of the planets (Venus is the other one).
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Most of planets are named after gods, (and one goddess). Therefore, Uranus follows that pattern. Uranus means "the Greek god of the sky." However, when Uranus was discovered, the discoverer wanted to name this planet after the king of England at the time: King George III, but with a Latin twist: Georgium Sidus, which means Georgian Planet.
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Yes, Uranus has 13 rings.
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Uranus does have a magnetic field, but it is very irregularly shaped.
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Perhaps in a secure spacecraft in a flyby. However, it would take a long time to get there, and once a person did get there, there would not be any surface to land on, since Uranus is a gas giant.
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