The Sun's Most Explosive Moments
The sun has been exploding with activity for the last decade. From solar flares to coronal mass ejections (CMEs), NASA and its partners around the world have captured stunning images and video of this heightened period of solar activity.
MORE: Stunning Northern Lights
Big Lake, Alaska
iWitness Contributor Gerard Billinger says his daughter Jennifer Shriner Billinger took this photo of the Northern Lights from Big Lake, Alaska.