Sun Makes Nervous Face with Hole in Its Head (Video)

The sun has been making some anxious faces lately — but you'd be worried, too, if a huge hole had just opened up on your head. The sun's "eyes" are actually active regions, which serve as launch pads for solar flares and the eruptions of superheated solar plasma known as coronal mass ejections (CMEs). Material zooms away from coronal holes as part of the high-speed solar wind, which can cause geomagnetic storms here on Earth.