Science Daily - 10/16/13
Ninety-three million miles away, the Sun's magnetic field -- and presumably its dynamo -- is churning and undulating as the star experiences the height of the so-called solar maximum, where the sun's magnetic field contorts and eventually flips.
"Solar max," as scientists call it, is an 11-year cycle where the sun's magnetic field reverses polarity, typically spawning sunspots, flares, auroras and geomagnetic storms that, if large enough, can disrupt satellites and fry power grids on Earth.
