solar storms ever recorded. The sun fired its most powerful kind of flare, an X1-class solar flare, that peaked at 11:35 a.m.
EDT (1535 GMT) on October 28. Solar flares are massive eruptions of radiation from the sun that send charged particles streaming outward from the star.
Experts classify them in a letter system, with C-class storms being relatively weak, M-class more moderate and X-class flares as the strongest.A NASA statement explained: "X-class denotes the most intense flares, while the number provides more information about its strength."An X2 is twice as intense as an X1, an X3 is three times as intense, etc.
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