Annie and Walter created the butterfly diagram to analyse sunspots, showing the latitude of the sunspots over time
Text from Wikipedia, available under CC BY-SA 4.0.
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← Annie Scott Dill Maunder timeline
Annie and Walter created the butterfly diagram to analyse sunspots, showing the latitude of the sunspots over time
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-19 from Wikipedia. The archived copy is preserved so this citation survives link rot.