Last updated: January 5, 2021
Article
Aurora Borealis at Fort Mandan, Nov. 5-6, 1804

William Clark wrote the next morning, “last night late we wer awoke by the Sergeant of the Guard to See a nothern light, which was light, not red, and appeared to Darken and Some times nearly obscered and many times appeared in light Streeks, and at other times a great Space light & containing floating Collomns which appeared 〈to〉 opposite each other & retreat leaveing the lighter Space at no time of the Same appearance.”