Across
- 1. step by step discovery
- 5. sun-centered model of the universe
- 6. german astronomer/mathematician
- 7. supported copernicus theory
- 9. italian assembled astronomical telescope
Down
- 2. polish scholar published revolutions of heavenly spheres
- 3. a branch of mathematics
- 4. england called a force gravity
- 5. possible explanation
- 8. refined the alchemists