Figure 2 (IMAGE) Nagoya University Caption A geographical summary of the auroral visibility on 4 February 1872 Credit Hayakawa et al. (2023) Usage Restrictions Credit must be given where image is used License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.