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Uranus

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Uranus
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Uranus is blue-green in color, the result of methane in its mostly hydrogen-helium atmosphere. The planet is often known as an ice giant, since 80 percent or more of its mass is made up of a fluid mix of water, methane, and ammonia ices. It’s an extremely cold planet, so cold that any living being would ever be able to survive this weather even if they we wore protective suits. Though it is visible to the naked eye like the five original planets, it was never recognized as a planet by observers because of its dimness and slow orbit.

The length of one day on Uranus is 17 hours and 14 minutes. It would approximately take 83.4 years for this planet to orbit around the Sun. The mass is 8.649x10^25 and the gravity is 917. If you weighed 100 pounds on Earth you would only weigh up to 86 pounds on Uranus! William Herschel discovered this planet on March 13, 1781. It unexpectedly was discovered while Herschel was working on a star-mapping project. Sir William Herschel announced its discovery on March 13, 1781, expanding the known boundaries of the Solar System for the first time in history. Uranus had been observed on many of other occasions before its recognition as a planet, but it was commonly mistaken for a star! The earliest recorded sighting was in 1690 when John Flamsteed observed the planet many of times, cataloging it as 34 Tauri. The French astronomer Pierre Lemonnier observed Uranus at least twelve times, not knowing what to call it. Sir William Herschel observed the planet on March 13, 1781, but he initially reported it on April 26, 1781 as a "comet”. Herschel engaged in a series of observations on the parallax of the fixed stars, using a telescope of his own design.

Unlike the other planets of the solar system, Uranus is tilted so far that it essentially orbits the sun on its side, with the axis of its spin nearly pointing at the star. This unusual orientation might be due to a collision with another planet soon after it was formed. This

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