The Sun let loose with an enormous explosion on the morning of June 7, 2011. The entire eruption was captured by NASA’s Solar Dynamics Observatory. The animation here is from the ultraviolet camera, colored orange to make it viewable.
NASA films incredible solar flare: Extended video of unique sun explosion :
An unusual solar flare observed by a NASA space observatory on Tuesday could cause some disruptions to satellite communications and power on Earth over the next day or so, officials said. The potent blast from the Sun unleashed a firestorm of radiation on a level not witnessed since 2006, and will likely lead to moderate geomagnetic storm activity by Wednesday, according to the National Weather Service.
Discover Magazine: The Sun lets loose a HUGE explosion