I think many of you have already read that but if not, I let this article to explain: http://www.vox.com/2014/7/30/5951263/a-catastrophic-solar-storm-just-barely-missed-earth-in-2012 and there are even more when using Google http://www.forbes.com/sites/bridaineparnell/2014/03/19/massive-solar-supers...