WASP-17 (pictured) was another planet found to have a weird reverse orbitin a study published in mid-2009. Credit: ESA
From Cosmos Magazine:
SYDNEY: Astronomers have found an extrasolar planet with an "outlandish orbit" that circles its star either backwards, or at an angle of around 90ยบ to the orientation of the star's rotation.
Planets in our own Solar System orbit in the same plane and direction as the Sun's own rotation. This led astronomers to propose the 'nebula hypothesis' - whereby planets form from a flat, swirling disk of gas around a proto-Sun.
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