The other day I stumbled upon a short marketing film by the Finnish government about the Northern Lights. It’s lovely and I’ve linked to it at the end of this post.
The film opens with the following statement:
“Aurora is a natural light display in the sky, particularly in the polar regions, caused by the collision of charged particles directed by the Earth’s magnetic field.”
Hmmm! That’s a very nice scientific explanation, but what are they really?