Why is Aurora Borealis Green?

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Tags

  1. #collisions
  2. #northern
  3. #between
  4. #color
  5. #either
  6. #greenish
  7. #yellow
  8. #lights
  9. #electrons
  10. #familiar
  11. #moving
  12. #caused
  13. #nitrogen
  14. #atmosphere
  15. #particles
  16. #generally
  17. #emits
  18. #oxygen
  19. #space
  20. #gives
  21. #aurora
  22. #light