What is Uranus known for in the context of planetary rotation?

Uranus is known for its unique axial tilt, which causes it to rotate on its side relative to its orbit around the Sun. This extreme tilt of about 98 degrees means that its rotation axis is nearly horizontal compared to other planets. As a result, Uranus experiences unusual seasons, with one hemisphere facing the Sun for an extended period while the other remains in darkness. This characteristic sets Uranus apart from the other planets in the solar system, making it a fascinating subject of study in planetary science.

The other options highlight different aspects of planetary rotation that do not apply to Uranus in the same context. For example, while some planets have rapid rotation or long rotation periods, Uranus is specifically recognized for its extreme tilt rather than the speed or duration of its rotation. Additionally, while retrograde rotation is a feature of some planets, Uranus does not rotate in a retrograde direction; instead, it has a distinctive rotational characteristic due to its axial tilt.