Galileo, along with other scientists of his time, had discovered sunspots! Needless to say, this ill-advised activity caused him to see spots and suffer from partial blindness. Nearly 400 years ago Galileo looked at the bright Sun through a telescope. If scientists could predict sunspot activity, we would not only know what the Sun would do ahead of time, but we might also gain a better understanding of how the Sun works. Scientists count the number of sunspots to determine the magnitude of a solar cycle and how long it lasts. Sunspots are dark blotches on the Sun that are relatively cool. Radio communications, power distribution, orbiting spacecraft, and even the weather are all affected by an active Sun here on Earth. The Sun produces numerous sunspots, flares, and coronal mass ejections on a daily basis. We are now approaching the peak of the current solar cycle’s activity. The Sun, on the other hand, has seasons, or cycles of activity and relative inactivity. The sun is commonly regarded as a featureless, unchanging ball of light. Teacher Lesson Plans: Sunspot Cootie Catcher.How do we know a new sunspot cycle is beginning?. ![]() How do sunspots affect conditions here on Earth?.
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