The Geocentric Model

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Across
  1. 3. Largest planet in the Solar System
  2. 4. Earth at the center of the Universe
  3. 7. Meaning 'wanderer' in Greek
  4. 8. a small circle whose center moves around the circumference of a larger one
  5. 10. Orbiting the Earth
  6. 12. situation that is observed to exist or happen
  7. 15. Smallest planet in the solar system
  8. 16. The Red Planet
Down
  1. 1. Geometric shape resembling a ball
  2. 2. A backward motion
  3. 5. Second planet from the Sun
  4. 6. Person who thought material world consisted of four elements (earth, water, air and fire).
  5. 9. relating to the Greek astronomer Ptolemy
  6. 11. The star at the center of our Solar System
  7. 13. the large circular orbit followed by the center of the small epicycle in which a planet was thought to move.
  8. 14. Direction or Rotation that is counterclockwise