Astro Bob blog: Northern lights bloomed late last night and may return again tonightLast night's bump in auroral activity took a long time to develop into a nice display. A funky green arc low in the northern sky glowed meditatively for hours. Not until 1 a.m. did it stir. If you happened to be an owl or insomniac, you were in for a treat.
By: Bob King, Duluth News Tribune