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Sun’s Current Solar Activity Cycle Is Weakest in a Century: ‘None of us alive have ever seen such a weak cycle’

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SAN FRANCISCO — The sun’s current space-weather cycle is the most anemic in 100 years, scientists say.

Our star is now at “solar maximum,” the peak phase of its 11-year activity cycle. But this solar max is weak, and the overall current cycle, known as Solar Cycle 24, conjures up comparisons to the famously feeble Solar Cycle 14 in the early 1900s, researchers said.

“None of us alive have ever seen such a weak cycle. So we will learn something,” Leif Svalgaard of Stanford University told reporters here today (Dec. 11) at the annual meeting of the American Geophysical Union. [Solar Max: Amazing Sun Storm Photos of 2013]

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