Why some planets in universe revolve around sun in opposite direction of the direction in which earth revolve around sun? Please help me to find the answer of this question.
closed as unclear what you're asking by AccidentalFourierTransform, ACuriousMind♦ Dec 25 '16 at 15:18
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According to the theory of Jefimenko and of de Mees, the operation of co-gravitation over a period of time will cause planets to rotate in the same direction as the orbit, and will cause a planet near to the centre to go into some sort of phase-lock where the orbit and the day are in a simple ratio, usually 1:1 as is the earth/moon.
It is worth noting, though that while the natural order is for prograde rotations and revolutions, the retrograde orbits etc are an indication of recent events, which have not settled down. For example, the capture of a passing cloud or body might settle down into a retrograde orbit.
It is likely that the exoplanets orbit close enough to the stars to be influenced by the magnetic fields of the stars.