In what year did you find out that the Coronal Mass Ejections can create the Aurora (Northern Lights)?

Question: In what year did you find out that the Coronal Mass Ejections can create the Aurora (Northern Lights)?
- Keywords:
  aurora,
  discover
Asked by anon-219940 to Emma on 11 Jun 2019.
- Emma Davies answered on 11 Jun 2019:
  
  It wasn’t me who discovered what caused the Aurora – this was discovered by a Norwegian scientist called Kristian Birkeland in the early 1900s!

Question: In what year did you find out that the Coronal Mass Ejections can create the Aurora (Northern Lights)?