Why Does Venus Rotate Backwards?

Cause For The Abnormal Reverse Rotation Of Venus

Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. The planet is named after the Roman goddess of love and beauty. After the Moon, it is the brightest natural object in the night sky, reaching an apparent magnitude of −4.6, bright enough to cast shadows. Because Venus is an inferior planet from Earth, it never appears to venture far from the Sun: its elongation reaches a maximum of 47.8°. Venus reaches its maximum brightness shortly before sunrise or shortly after sunset, for which reason it has been referred to by ancient cultures as the Morning Star or Evening Star.



The movement of a planet about an imaginary axis is called rotation. If we imagine ourselves to be looking down upon the north pole of the earth, the direction of its turning will be in counter-clockwise. If we place a finger upon a point on a globe near the equator and push the finger eastward, it will give the correct rotation. Of the Eight planets of the solar system, Venus rotates backwards. That is , while earth and the other planets rotate from west to east, Venus rotates from east to west. 
This backward rotation is called 'Retrograde Rotation'. The rotation of this planet is at a slow rate. With respect to the stars Venus completes one rotation in 243 days but it needs only 225 earth days to revolve round the sun once. Venus is the only planet that takes more time for rotation than for its revolution. However scientists haven't yet discovered the scientific reason for this peculiarity.