Ancient/Modern Astronomy

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Across
  1. 3. small circles
  2. 6. phases of the moon
  3. 9. attached particular importance to "omens"
  4. 12. aligned with the motions of Venus
  5. 13. influencing cosmologists, astronomers to take the wrong path
  6. 15. a natural science that deals with the study of celestial objects
  7. 16. used trigonometry to develop the first valid idea of the scale of the universe
  8. 17. theory of special relativity
  9. 18. explosion of giant star
  10. 19. Plain Indians
  11. 21. celestial shapes
  12. 23. believed the sun moved around the earth
  13. 24. 4 brightest moons of Jupiter
Down
  1. 1. in the center
  2. 2. large circles
  3. 4. developed geocentric model
  4. 5. discovered the laws of motion
  5. 7. developed a system of constellations
  6. 8. sun
  7. 10. first to use the telescope
  8. 11. explain how the universe worked in a logical systematic manner
  9. 13. universe is infinite
  10. 14. tracked the seasons
  11. 20. Egyptian civilization
  12. 22. determine the length of a year to an accuracy of 6 min