Old Space Weather

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This log entry from Old Weather shows how the information contained in ships logs isn’t only useful for revealing the history of the Earth’s climate. The logs contain all sorts of interesting information. Here we see a member of the H.M.S Hilary crew recording an observation of sunspots. The entry reads “at noon aTS observed spots near centre of sun like this [diagram] it appeared to be two with a narrow passage between them, I make this note, for although I have seen sun spots before, I have never seen such large ones”

Read more about this observation in this Solar Stormwatch blog post