Across
- 1. The force that keeps the Earth in orbit.
- 4. Happens in Summer and Winter.
- 5. Thought that the Earth was the center of the universe.
- 6. The moon orbits this planet.
- 8. We complete one every 365.24 days.
- 10. The object that orbits the Earth.
Down
- 2. Spinning motion.
- 3. Thought that the Sun was off to the side.
- 7. Study of the universe.
- 9. Happens in Spring and Autumn.