Across
- 4. Proposed geocentric model.
- 5. First proposed heliocentric model.
- 6. Way The galaxy our solar system is in.
- 7. What do astronomical units measure.
- 8. Outer planets are made mostly of.
- 10. Inner planets are made mostly of.
- 12. Earth centered solar system.
- 14. Discovered 4 moons orbiting Jupiter with telescope.
Down
- 1. Proposed elliptical orbit of planets.
- 2. Sun centered solar system.
- 3. Why planets orbit the sun.
- 6. Space rock that makes it to earth's surface.
- 9. Found in belt between Mars and Jupiter.
- 11. Shooting star.
- 13. The red planet.