Astronomical Terms

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Across
  1. 2. diurnal rotation of the Earth on its axis
  2. 4. 206,265 astronomical units
  3. 8. pattern of stars
  4. 10. star crosses the local meridian
  5. 11. north polar distance
  6. 13. April 8, 2020, 10:35 am PST
  7. 15. two extreme points in the orbit of a planetary body about its primary body
  8. 18. parallels of latitude
  9. 19. astronomical almanacs
Down
  1. 1. wobble motion
  2. 3. sun stands still
  3. 5. regions of the sky
  4. 6. equal night
  5. 7. study of position and movements of celestial bodies
  6. 8. scientific study of celestial objects
  7. 9. angle between the celestial equator and the ecliptic
  8. 12. imaginary belt around the heavens
  9. 14. a moment in time
  10. 16. pedestal of a sundial
  11. 17. point directly beneath the observer