Question

All planets asteroids and sun except a few exceptions such as ___________ and ___________ rotate in counterclockwise direction.
A. Mars and Venus
B. Venus and Uranus
C. Uranus and Saturn
D. Saturn and Venus

Answer 1

Hint: Majority of the planets, asteroids, and the sun also rotate in anticlockwise directions. This is because of the peculiarity of conditions that prevailed initially in the cloud of gas that formed the solar system. But planets Venus and Uranus rotate in a direction opposite to the direction of rotation of other planets in the solar system.

Complete step by step answer:
Most of the objects such as planets, asteroids including the sun in the solar system rotates in the anticlockwise direction. The reason for this uniformity is because of the initial conditions that existed in the cloud gas that formed our solar system.
The sun rotates about its own axis in an anticlockwise direction. Earth also rotates about its own axis in an anticlockwise direction and it also revolves around the sun in an anticlockwise direction. Similar is the case with the majority of the other planets and the small asteroids that orbit around the sun. But there are some exceptions. The planet Venus and Uranus do not follow this direction of rotation.
The motion of the planets in the same direction in which the center body rotates is called prograde rotation. Thus, the rotation of planets except Venus and Uranus is said to be prograde rotation. The direction of rotation counter to the direction of rotation of the central body is called retrograde rotation. Thus, Venus and Uranus are said to have retrograde rotations. Venus rotates in the clockwise direction and the time taken by Venus to rotate about its axis once is greater than the time taken by it to revolve around the sun. Because of this, Venus has a duration of one day greater than the duration of one year.
The planet Uranus is also having a retrograde rotation.
The reason for this strange behavior of these planets is not known exactly.
It is assumed that they might have been struck by any other planetary bodies that made their rotation counter to the rotation of the other planets.

Therefore, we can say that except Venus and Uranus, All planets asteroids, and the sun rotates in a counterclockwise direction. Hence, the correct answer is option B.

Note:
Normally all regular satellites of planets also undergo prograde rotation. In the case of Uranus, the satellites rotate in the direction of Uranus so these satellites are also retrograde with respect to the sun. There are some other planets such as Neptune which have retrograde satellites even when the planet is undergoing prograde rotation. Such satellites are likely captured satellites.