Across
- 2. one circle around the sun
- 4. when the moon is a perfect circle in the night sky
- 7. the invisible line around the center of the Earth
- 8. the area north of the equator and south of the equator
- 9. the invisible line from the North pole to the South pole
- 11. an object that orbits a bigger object
- 13. one circle around the earth's axis
Down
- 1. when the moon isn't visible in the night sky
- 3. the time when the earth is not facing the sun
- 5. the fixed circle around an object
- 6. the different shapes of the moon
- 10. the four positions of the earth in relation to the sun
- 12. the time when the earth is facing the sun