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Suspected Collision
Scientists believe Uranus was hit by an object causing a rotation change -
First Known Recording: Uranus Discovered as Star
The first recorded observation of Uranus was by John Flamsteed in 1690, an English astronomer who was famous for discovering stars. It's faintness in the sky and slow motion made him believe it was a star.
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Sir William Hershel Discovers Uranus
Discovered accidentally, Uranus was long mistaken as a star because of its dimness -
Moons Oberon And Titania Discovered
The first of 27 moons were discovered by Sir William Hershel -
Rings of Uranus Discovered
Nine rings were unexpectedly discovered by James Elliott during observations of the planet's atmosphere. -
Ring System Discovered
The first of many rings of Uranus were discovered. -
Voyager 2
Voyager 2 visits Uranus and discovers 10 small moons, in addition to the 5 discovered prior. -
Hubble Telescope
Hubble's sensitivity discovers two more feint rings, twice the size of the previously known ring system.