Thursday, August 13, 2009

New Planet Displays Exotic Orbit

Planets with retrograde orbits should be rare

From The BBC:

Astronomers have discovered the first planet that orbits in the opposite direction to the spin of its star.

Planets form out of the same swirling gas cloud that creates a star, so they are expected to orbit in the same direction that the star rotates.

The new planet is thought to have been flung into its "retrograde" orbit by a close encounter with either another planet or with a passing star.

The work has been submitted to the Astrophysical Journal for publication.

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