Across
- 4. The creator of the three laws of motion
- 7. Astronomer who found out how the planets orbit
- 9. A force
- 13. Oval shape
- 14. An English doctor who made advances in human anatomy
- 15. This person studies planets
- 16. The sun is in the center
- 18. An English statesman and writer
- 19. The theory of the ultimate nature of reality
- 20. A judicial procedure
Down
- 1. A major change in European thought
- 2. The original thinker of heliocentrism
- 3. A logical procedure for gathering information
- 5. The earth is in the center
- 6. A man who believed Earth was the center of the universe
- 8. Promoting excellence in science for the benefit of humanity
- 10. Galileo's book
- 11. Creator of the first telescope
- 12. "I think therefore I am".
- 17. Isaac Newton made these