Thanks so much for reading, Anna! And I'm glad you enjoyed this article. About your comment on why there were no photographs, there were a few reasons. First, it seems like photographing outdoor events was not always a reflex at the time, probably due in large part to exposure time. For instance, as far as we know, there is no photograph of the Proclamation of the Third Republic (September 4, 1870). I was so surprised by this that I even contacted the museum in Saint-Denis that has an impressive collection of artifacts from the Siege of Paris to confirm it. Another reason for no photos is that photography methods at the time couldn't easily capture images of the sky - even simply a sunny day with clouds. And color would have been even more difficult. Combining that with another reason, the fact that lots of light was needed to take a photograph with most methods at the time, means that it was probably impossible to photograph the aurora borealis in 1870. I had a look and the first photograph of the aurora borealis dates to 1892. You can see it here: https://www.teodor.no/aurora/the-pioneers-of-northern-light-photography#:~:text=German%20physicist%20and%20astronomer%20Otto,glimpse%20of%20the%20northern%20lights. It is impressive in its own way, but still no color. Thanks again for reading and for your insightful and thoughtful comment!