Uranus and Neptune

The two furthest planets from the Sun are Uranus and Neptune. Uranus and Neptune are both gas planets.

Blue-Green Methane

Both Uranus and Neptune have atmospheres of hydrogen, helium and methane. The methane gives these planets a blue-green colour. Below the atmosphere, both planets have liquid layers of water ice, methane and ammonia around small, rocky cores.

Uranus:

Uranus, its rings and moons all orbit the Sun, tipped on their side. This may have been caused by a collision with another huge object. The result is that each pole on Uranus receives 42 Earth years of sunlight followed by 42 years of darkness.

Neptune:

Neptune, like Uranus, has rings and moons. It has a stormy atmosphere and has the fastest recorded winds in the solar system. These storms may be caused by heat generated within Neptune.