ocr: NUCLEAR FACTORY Moving currents and the rotation on the Sun form a complex magnetic field, whose strength varies and poles change in 11-year cycles. The magnetic field of the Sun is only twice as powerful as that of the Earth. It may form loops on the surface of the Sun. In these areas the streams are blocked and the temperature drops. We can see these areas as sunspots. In close proximity to sunspots, the strength of the magnetic field may multiply over 3,000 times and it often results in powerful eruptions or flares. Prominences are even bigger eruptions, and they can sometimes form loops. T ...
