Across
- 3. Earth Centered model
- 6. Tool to observe stars
- 8. Discovered planetary motion laws
- 10. first to use a telescope for astronomy
Down
- 1. Sun centered system
- 2. Explained gravity
- 4. Group of Stars in a pattern
- 5. Proved universe is expanding
- 7. Proposed heliocentric theory
- 9. North star