Nicolaus Copernicus

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Across
  1. 2. Corpses
  2. 4. The study of the stars
  3. 6. A forceful overthrow
  4. 8. The name of his first book
  5. 10. The middle
  6. 12. The center of the solar system
  7. 13. His theory that the sun was the center
  8. 16. A country that Copernicus lived in
  9. 18. Something in space
  10. 19. Where everything is
  11. 20. Where we live
Down
  1. 1. His first name
  2. 3. Someone really good at math
  3. 5. A university he studied at
  4. 7. Giant celestial bodies
  5. 9. Something pertaining to science
  6. 11. Something from Germany
  7. 14. His last name
  8. 15. Something not proven to be true
  9. 17. A month of the year