What is the axis of the Earth called?

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Tags

1. #logical
2. #seasons
3. #degrees
4. #orbit
5. #earth
6. #scientists
7. #instead
8. #relative
9. #obliquity
10. #plane
11. #around
12. #tilted
13. #angle
14. #planet
15. #called
16. #rotation
17. #orbital
18. #because