A breathtaking aurora from Earth's largest geomagnetic storm in almost…

Late last Sunday, the Sun unleashed an M9-class solar flare, showering Earth with subatomic particles that gave rise to one of the biggest geomagnetic storms in recent history. The resulting aurorae, which were even brighter than usual in the planet's northernmost latitudes, were an absolute marvel to behold. » 1/27/12 8:35am 1/27/12 8:35am