August 17, 2012

The Sun Is Round... Almost too Round

Marissa Fessenden, SciAm


AP Photo

The 11-year solar cycle swoops between peaks of intense magnetic activity—apparent as sunspots, coronal loops and flares—and relative quiescence, when the sun's face is free of blemishes. New research shows that despite this tumult, the sun remains remarkably constant in its globular shape—findings that have left researchers scratching their heads.

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TAGGED: Nasa, Solar Cycle, Sun

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