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The largest sunspot seen in about a quarter century has produced another powerful X-class flare today, the sixth in less than a week. “This was the sixth X-class solar flare from NOAA 2192, a record for the number of X-class flares generated by a single group so far this solar cycle. It was also the fourth X-class flare since last Friday, continuing a period of intense flaring activity. This sunspot group has grown again a bit, and maintains its magnetic complexity. A degradation of the HF radio-communication was observed over South-America, the Caribbean, and West-Africa.” The last sentence is referring to some radio communications blackouts that have occurred in these areas because of the flares.

http://science.slashdot.org/story/14/10/29/0319206/largest-sunspot-in-a-quarter-century-spews-flares

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