PASADENA, Calif., Nov. 7 (UPI) -- A giant sunspot that erupted last week has been ranked as one of the largest solar flares seen in years, U.S. scientists said.
NASA said a powerful solar flare that erupted Thursday on the sun's surface has been classified as a powerful X1.9 flare. The flare triggered some disruption to radio communications, the U.S. space agency said on its Web site.
Advertisement