Across
- 1. a geometric oval shape
- 5. astronomer who figured out the arrangement of planets
- 7. a type of unit referring to the average distance of the Earth and Sun
- 8. planet closest to the Sun
- 10. greek who thought the Earth was at the center of the solar system
Down
- 2. the greek meaning of this word means “wanderers”
- 3. model that has Earth at the center of the universe
- 4. natural satellite that revolves around a planet
- 6. model that has the planets revolving around the Sun
- 9. astronomer who saw four moons revolving around Jupiter proving not everything revolves around Earth