ocr: SUNSPOTS Ift the character of the solar wind is like that of the winds on Earth, i.e., mild, steady, and global, then sunspots and SO- lar flares ore like lightning and torna- does, i.e., powertul, but affecting only a small area. The diameters of sunspots are frequently arger than that of the Earth: the big- gest observed sunspot wOs more than 10 times Jarger than the diameter of the Earth. The first Westerner to observe sunspors was Galileo Galilei. He men- tioned them in his book Sidereus Nuncius. Although Galilei was the first West- erner, the Chinese had already made earlier observations ...
