Strong Solar Flare Triggers Brief Radio Blackout | Video

Crackling with flares for several days, Sunspot AR2422, blew off its strongest to date on Sept. 28th, 2015. The M7-scale event "ionized the top of Earth's atmosphere," according to Spaceweather.com, triggering a low frequency radio black out over South America and the Atlantic Ocean. (Full Story)

credit : NASA/SDO