Here's why:

* Atmosphere: Uranus's atmosphere is primarily composed of hydrogen and helium, with a significant amount of methane. Methane absorbs red light and reflects blue light, giving Uranus its distinctive blue-green color.

* Tilted Sideways: Uranus is unique in the solar system because its axis of rotation is tilted at nearly 90 degrees. This means that Uranus essentially rotates on its side, with its poles facing the Sun for extended periods.

Let me know if you have any more questions about Uranus or other planets!