Tree Rings Reveal 1,000 Years of Solar Activity

Tree Rings Reveal 1,000 Years of Solar Activity
By Evan Gough

The Sun has a lot of rhythm and goes through different cycles of activity. The most well-known cycle might be the Schwabe cycle, which has an 11-year cadence. But what about cycles with much longer time scales? How can scientists understand them? As it turns out, the Sun has left some hidden clues in tree …

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January 26, 2021 at 05:37AM
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