Deutsch: Sonnenflecken sind Flecken auf der Sonnenoberfläche. Durch komplexe Magnetfelder wird die Wärmezufuhr verhindert und die Oberfläche kühlt an diesem Ort um ca. 2000K ab. Im Kontrast zu der helleren restlichen Photosphäre sehen die Flecken dunkel aus.
English: Sunspots are spots on the surface of the sun. The heat supply is restricted by complex magnetic fields and the surface cools down by approx. 2000K at this location. In contrast to the brighter rest of the photosphere, the spots look dark.
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