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discovered Uranus in 1781.
27 known moons
is the only spacecraft to fly by Uranus.
Uranus' atmosphere, like that of other gas giants, is primarily made up of
hydrogen and helium
Uranus was the
discovered by observing with a telescope.
Like other gas giants, Uranus has a
has ever orbited the planet.
Uranus rotates on its side due to a massive
in its axis.
Uranus has a
. One Uranian day is just 17 Earth hours long and one uranian year is 84 Earth years long.
Uranus is a
. To put it in perspective, if Earth were an apple, Uranus would be a basketball.