Only Venus turns clockwise

At the dawn of its existence, our solar system was a rotating cloud of particles and gas that formed a rotating disk with the sun in its center.

Due to this common origin, all planets rotate around the Sun in one direction and approximately in one plane. They also turn around in one direction (anticlockwise) - except Uranus and Venus. Uranus is turning aside, while Venus - in the opposite direction.

The most likely cause of this is giant asteroids that hit them in the distant past.

Source: www.psychologytoday.com
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