Here's why:

* Bluish-green: Uranus is known for its distinctive pale blue-green color, caused by the presence of methane in its atmosphere.

* Rings: Uranus has a complex system of rings, although they are fainter than Saturn's.

* Lays on its side: Uranus is unique in that it rotates on its side, with its axis tilted at almost 90 degrees to its orbital plane. This means that its poles face the sun for extended periods, resulting in extreme seasons.