Oldie-but-goodie-kind-of-thing: A relevant, reblogged text.
“...but he did publish several works of a scientific nature.”
There were occasions every year when we would see colours like this at Andøya, too.
Honestly, there was a time when I thought that being an astronomer meant working at the “Europäische Südsternwarte”. 🙂
...if that makes any sense to you. 🙂
Wikipedia has an answer - and what an answer that is!
No, I don’t know how real these graphs circulating are, but the point stands regardless.