Across
- 6. increasing
- 10. speed along an ellipse
- 13. 🌖
- 14. caused by variance in Sun's energy
- 15. amount of material
- 16. only horizontal great circle
- 18. rising and falling sea level
- 19. what shadowed portion of the Moon is visible from Earth
- 21. "GMT-0" city
- 22. we never see it from the Earth
- 24. how long a revolution takes
- 26. closest approach to Sun
- 29. 🌓
- 30. when sea level is most equalized around the earth
Down
- 1. the main vertical great circle
- 2. 🌕
- 3. 🌗
- 4. farthest distance from Sun
- 5. horizontal line
- 7. decreasing
- 8. space that something occupies
- 9. ratio of mass to volume
- 11. there are 24
- 12. 🌘
- 17. mass' attractive force
- 20. shares center point with the Earth's sphere's center point
- 23. 🌑
- 25. vertical line
- 27. caused by combined force of Moon and Sun
- 28. how much the Sun always lights up bodies