Early Astronomy By Clio Rodriguez

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Across
  1. 5. orbit in which object of orbit is at center and orbiting body does not change speed
  2. 7. model which survives repeated testing
  3. 8. people who lived in "four corners" who built structures to mark solstices and equinoxes
  4. 10. Greek philosopher who believed all natural motion is circular and reason is more important than observation
  5. 14. two words; what planets were originally referred to as
  6. 17. cosmogony that proposes the Sun to be at the center of the universe
  7. 20. pseudoscience that claims to know how positions of planets influence human behavior
  8. 21. model of the universe that was created 1500 years after Ptolemy's model that placed Sun at center
  9. 22. Galileo discovered this planet was not a sphere
  10. 26. Polish astronomer known for first Sun-centered model of universe
  11. 29. angular distance North or South of equator
  12. 30. Greek astronomer who measured circumference of Earth with almost 100% accuracy
  13. 31. two words; galaxy that contains our solar system
  14. 34. bad scientific practice which masquerades as science, but does not follow rules
  15. 37. time it takes for object to orbit
  16. 38. name of imaginary sphere of infinite extent with Earth at center
  17. 39. small circle placed on larger deferent
  18. 40. angular distance measured East or West
  19. 43. English astronomer known for first theoretical model to explain gravity
  20. 45. what Galileo discovered on Sun's surface
Down
  1. 1. apparent change in position of object due to change in observational position
  2. 2. how squashed ellipse is
  3. 3. name of tribes of North America who created star maps and sighting circles for accurate time and religious/agricultural purposes
  4. 4. model of the universe in which Sun follows path called ecliptic going around Earth once in one year
  5. 6. natural force of attraction which causes objects to fall back down to Earth's surface
  6. 9. two words; first recorded attempt at rational explanation of heavens
  7. 10. normal, forward motion
  8. 11. bad scientific practice which establishes "truths" through belief
  9. 12. Greek astronomer that created first model of universe that used epicycles and deferents
  10. 13. Danish astronomer known for best naked-eye observations
  11. 15. what Galileo discovered on Moon's surface
  12. 16. backward motion
  13. 18. science that studies matter in outer space
  14. 19. Greek philosopher who wrote The Physics and proposed fifth element
  15. 23. imaginary point directly "above"
  16. 24. cosmogony that proposes the Earth to be at the center of the universe
  17. 25. north star
  18. 27. people who lived in Central America who accurately predicted eclipses
  19. 28. famous structure in England that was used as observatory
  20. 32. German astronomer who was a great mathematician and is known for first theoretical model to explain planetary motions
  21. 33. Italian astronomer known for first observations of Sun
  22. 34. model of the universe that had Earth at center and placed planets on epicycles, which were on deferents
  23. 35. oval-shaped orbit in which Sun is at focus and body has constantly-changing angular speed
  24. 36. theory about one's place in the universe
  25. 41. one complete revolution of celestial body or artificial satellite
  26. 42. large circle that held smaller epicycle
  27. 44. Galileo discovered this planet had phases