Quote:
Originally Posted by David Johnston2
Admittedly that sounds insanely improbable, but I'm not sure where conservation of angular momentum come in.
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Conservation of angular momentum requires a planet's north and south poles to point in constant directions. As its orbit carries a planet around a star, the direction to the star is constantly changing. Therefore the north pole of a planet cannot point constantly at the star (or any of the stars) in its system — because of conservation of angular momentum.