Across
- 2. who improved the telescope and supported Copernicus
- 4. who proposed the heliocentric model of the universe
- 6. the laws of planetary motion
- 7. Method
- 9. used to view objects too small to be seen by the naked eye
Down
- 1. the laws of motion and gravity
- 3. that allows us to see distant objects in space
- 4. educated guess used in experiments
- 5. force that pulls objects toward each other
- 7. process for conducting scientific research
- 8. idea that the sun is at the center of the universe