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sunspot activity

  • One of the indices of solar activity, which follows a short-term cycle of 11 years and a long-term cycle of approx. 200 years.
German: Sonnenfleckenaktivität
French: activité des taches solaires
Italian: attivitĂ  maculare solare
Spanish: actividad de las manchas solares
Portuguese: atividade das manchas solares
See also:

 

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