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Researchers are predicting that our Sun is about to enter a period of long-term quiet called a grand solar minimum, a state that might begin as soon as 2020, and could last as long as fifty years. While this period will see a decrease in sunspot formation, magnetic activity and ultraviolet radiation output, the decline in solar radiation isn’t expected to help alleviate the problem of global warming in any meaningful way; however, it may cool the extreme upper atmosphere to the coldest it’s been for the past 70 years.
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