How long does an aurora borealis last?

Related questions

1. Can you see northern lights when cloudy?
2. What is the best time of year to view the northern lights?
3. Why is Aurora Borealis important?
4. Can you see northern lights with naked eyes?
5. Where can I watch Aurora?
6. Can aurora borealis be predicted?
7. Can you see Northern Lights in Ireland?
8. Can you see lights on Earth from space?
9. What causes an aurora?
10. Why did Stefan cut off Maleficent's wings?

Tags

1. #holes
2. #minutes
3. #coronal
4. #incoming
5. #depending
6. #responsible
7. #produce
8. #anywhere
9. #shows
10. #consistently
11. #northern
12. #ejections
13. #global
14. #displays
15. #auroras
16. #magnitude
17. #solar
18. #flares
19. #lights
20. #night
21. #aurora