Last updated on April 18, 2014 at 17:24 EDT

X5.4 Solar Flare, March 7, 2012

March 7, 2012

Right at midnight UT time the active region 1429 unleashed a powerful X5.4-class solar flare. X-class flares are the strongest of the flares. They are major events that can trigger planet-wide radio blackouts and long-lasting radiation storms.  credit:  NASA