NASA video: Largest sunspot since 1990 burps flares for 8 days

Video courtesy: NASA The Earth’s biggest sunspot in over two decades has unleashed a barrage of solar flares, including five in the strongest, X-class, over a period of eight days, a NASA video shows. P.S.: We muted the original audio, so you can add your own soundtrack…! RT LIVE http://rt.com/on-air Subscribe to RT! http://www.youtube.com/subscription_center?add_user=RussiaToday Like ...