ANU Boffin finds Dr Who setting

johnboy 7 June 2011 2

In thrilling news out of ANU Dr Daniel Bayliss has discovered a planet going the wrong way around its star. Which is a bit of a first.

Using one of the world’s largest telescopes in Chile, Daniel and his collaborators discovered that a distant planet WASP-17b is moving in the opposite direction to the spin of the star around which it orbits. The discovery throws traditional theories about how planets form around stars into doubt.

Planets form from the same disk of rotating material that gives birth to the star around which they move. So until now it has been assumed that any planets orbiting a star would be moving in the same direction as the star’s spin. This is certainly true in our own Solar System.

WASP-17b is quite different, Dr Bayliss says, and its backwards motion is somewhat of a mystery to scientists.


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Holierthanthou Holierthanthou 4:22 pm 07 Jun 11

Could just be a captured planet. Or since our solar system has planets, others have exoplanets, and if it came from elsewhere it’s an exoexoplanet.

Watson Watson 3:25 pm 07 Jun 11

Yay for star rebellism! Or maybe someone is just trying to decrease the odometer reading in preparation for a sale?

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