Far-ultraviolet aurora around a comet

[Stefano]

[i don't know how to tag this topic. If someone has a suggestion, tell me]

 

I saw this study on Nature talking about this unexpected invisible aurora around a comet. It is different from auroras on Earth, as a comet does not have a magnetic field, at least not intense enough to generate auroras. Here it is caused by solar winds.

 

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.nature.com/articles/s41550-020-1171-7&ved=2ahUKEwjcvL2ziPvrAhXCy6QKHQZ6CVkQFjAAegQIAhAB&usg=AOvVaw0AJDv1NL2QHPNx0pV1DnLd