The planet is Jupiter. It rotates in just 10 hours.
Jupiter rotates faster than any other planet in the solar system, with a day lasting about 9.9 hours.
That would be Venus which rotates retrograde. Actually, Uranus does too.
I believe the rotation of Venus is slowest, within our Solar System.
Uranus is the planet that rotates at about a 90-degree angle compared to the other planets in our solar system. This unique tilt causes Uranus to essentially roll on its side as it orbits the Sun.
Venus and Uranus both do this. Venus is the clearest example.
Venus is the only planet in our solar system that rotates in the opposite direction to most other planets, a phenomenon known as retrograde rotation. This means that the Sun rises in the west and sets in the east on Venus.
Both Venus and Uranus have a retrograde axial spin, they rotate clockwise when viewed from above their north pole. All of the other planets rotate anticlockwise (counter clockwise).
Venus is the terrestrial planet with retrograde spin, meaning it rotates on its axis in the opposite direction to most other planets in our solar system.
Venus rotates east to west, which is known as retrograde rotation. This means that it rotates in the opposite direction to most other planets in our solar system.
Uranus is the only outer planet (and only planet in our solar system) that rotates on its side.
Venus rotates on its axis slower than any other planet.
Venus