SOLAR SYSTEM

Detailed explanation-1: -An explanation for the backward, or retrograde, rotation is not certain. A long-held theory is that Venus once rotated as the other planets do, but was struck billions of years ago by a planet-size object. The impact and its aftermath caused the rotation to change directions or flipped the planetary axis.

Detailed explanation-2: -Uranus is also one of just two planets that rotate in the opposite direction than most of the planets (Venus is the other one), from east to west.

Detailed explanation-3: -Same as with Venus, Uranus also had counterclockwise rotation until a gigantic impact changed everything. The explanation for this is that in its formation history, Uranus collided with an Earth-sized object which lead to the change of its rotation.

Detailed explanation-4: -While, six of these planets including Earth rotate in prograde direction, two of the planets-Venus and Uranus rotate in retrograde direction which is opposite to what other planets do. This means six planets spin in a counter-clockwise direction including our Earth, but Uranus spins in a clockwise direction.

Detailed explanation-5: -Yes, Venus spins backwards compared to most of the other planets. It spins or rotates in the opposite direction that Earth rotates. This means that on Venus the Sun rises in the west and sets in the east.

Detailed explanation-6: -All the planets orbit the Sun in a counter-clockwise direction and rotate on their axis counterclockwise (west to east), except for Venus and Uranus. Venus rotates clockwise (east to west) while Uranus rolls on its side as it orbits the Sun.