Schon bevor wir in den derzeitigen Sonnenzyklus 25 eingetreten sind, gab es bei der NASA die folgenden “Flugbedingungen für Astronauten” zu lesen:
„The Sun’s activity rises and falls in an 11-year cycle. The forecast for the next solar cycle says it will be the weakest of the last 200 years. The maximum of this next cycle – measured in terms of sunspot number, a standard measure of solar activity level – could be 30 to 50% lower than the most recent one. The results show that the next cycle will start in 2020 and reach its maximum in 2025.”
Der hier gewählte
