The northern lights came so low last night, October 1, that skywatchers in a huge chunk of the upper U.S. got quite the show. Twitter user @coreburn is posting some of the most spectacular photos and videos, though we were taken by the lovely red colors in this image above by Ryan O'Hara, as seen in Stoughton, Wisconsin.
Image: Ryan O'Hara
Ryan O'Hara
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/20131002_aurora_main.jpg)
