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By P Gosselin on 13. December 2017
Share this…FacebookTwitterThe Sun in November 2017 By Frank Bosse and Prof. Fritz Vahrenholt (Translated and edited by P Gosselin) In November the sun was unusually quiet with respect to activity. The observed sunspot number (SSN) was merely 5.7, which is only 14% of what is typically normal for month number 108 into the cycle. The […]