It's composed mainly of Hydrogen and Helium but it also contains traces of ammonia, methane and other hydrocarbons.
It has the coldest planetary atmosphere at 49 kelvin.
It was the first planet to be discovered by telescope.
Uranus spins sideways so it's pole's are where other planets equators are.
It's named after the Greek/Roman titan Uranus who was Cronus' daddy; thats better than Saturn.
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| A picture taken by Hubble |
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