Uranus is mainly composed of ice, ammonia, and methane. Its average temperature is -205.2ºC. Its atmosphere is primarily made of hydrogen and helium, in addition to small amounts of methane. It has an extremely long, slow orbit, taking 84 Earth years to complete one orbit around the sun. This has confused astronomers about whether it was a planet or not.
Uranus’s axis of rotation is quite unusual with respect to the rest of the planets in the solar system: it is almost at a right angle to the plane of its orbit. This means that its poles are pointing toward the Sun instead of its equator, which makes for extreme seasons and complex atmospheric dynamics.