Across
- 4. model of a solar system with the sun at the center
- 6. the direction of Earth's rotation and revolution
- 7. term to describe the amount of Earth's revolution completed after 183 days
- 8. a rocky object that revolves around a planet
Down
- 1. model where the sun revolves around the Earth
- 2. one object orbiting another
- 3. the amount of degrees Earth revolves around the sun in 1 day
- 5. also referred to as spinning