Across
- 4. step one of the scientific method
- 7. Center star
- 9. the inventor of the telescope
- 10. the process of objectively establishing facts
Down
- 1. A path around a celestial body
- 2. the man who formulated planetary motion
- 3. the man who made the three laws of motion
- 5. Created the heliocentric model
- 6. the force between objects
- 8. the process of using mathematical thinking