News - First Glimpse of a Distant Star’s Polar Flip
Update: 2013-08-29
Description
Every 11 years our Sun’s magnetic north and south reverse positions; after another 11 years they rotate back to their original places. For the first time, this “polar flip” was detected in another star—the slightly bigger and hotter Tau Boo. Its polar rotation took only two years to complete, a magnetic cycle much shorter than the Sun’s. Astronomers suspect that the massive planet orbiting Tau Boo may play a role, hinting that stars’ magnetic fields are linked to the dynamic relationship they share with their planets.
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