This image of the sun provided by NASA'a Solar and Heliospheric
Observatory shows gigantic sunspot AR 1520. One of the biggest sunspots
in years, AR1520, is turning toward Earth. Forecasters estimate an 80%
chance of M-flares and a 25% chance of X-flares during the next 24
hours.Picture: NASA/SOHOHO/AFP/GettyImages
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