Where is the zenith?

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Tags

  1. #opposite
  2. #plumb
  3. #gravity
  4. #sphere
  5. #zenith
  6. #nadir
  7. #defined
  8. #directly
  9. #astronomical
  10. #celestial
  11. #observer
  12. #sighting
  13. #earth
  14. #above
  15. #point
  16. #underfoot