Quote:
Originally Posted by modest
Wow. You could set your watch by that. I had no idea the cycle was so regular - fascinating.
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Or, is that an illusion of
scale scope?
Quote:
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...Even the "normal" 11-year cycle seems to have longer-term behavior. Different cycles have different strengths, with some of them showing more sunspot activity than others. The strengths of the cycle peaks seem to follow a roughly 80-year period of very strong cycles, slightly weaker ones, then back to stronger ones, and so forth. With detailed sunspot records extending only a few hundred years, it is difficult to confirm or disprove this hypothesis. Combined with evidence for multiple periods of nearly complete inactivity, it becomes impossible to say whether the solar activity cycle, so extensively studied in the last 30 years, is normality or an aberration. ...
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Maunder Minimum
