astroengine writes "Early Tuesday morning, the Sun unleashed a powerful X-class flare. The X7 flare is the most energetic explosion to come from the Sun since December 2006. Although the flare was directed away from the Earth, a minor proton storm was detected and some radio communications have been disrupted due to higher-than-normal rates of ionization in the Earth's ionosphere. NASA's Solar Dynamics Observatory captured the whole event, imaging the flaring site and multi-million degree post-flare plasma."
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