Across
- 2. formed a theory why the planets moved the way they did.
- 5. A single force that keeps the planets moving around the sun
- 6. Used new technology to assemble an astronomical telescope.
- 7. A possible explanation
- 8. Someone who published "On the revolutions of the heavenly spheres"
Down
- 1. Made the scientific method.
- 3. A branch of mathematics
- 4. Explained that all matter was composed of tiny particles.