Across
- 2. bound by gravity
- 3. north star
- 4. constant in the horizon
- 6. unofficial
- 7. where everything in the sky can be seen
- 9. seen sky
- 13. sun signs
- 14. group 25 galaxies
- 15. IAU definition of constellations
- 18. two-thirds of the Milky Way center
- 20. sky pattern
- 21. origin
Down
- 1. Earth's projection
- 4. northern hemisphere
- 5. scientific
- 8. traced pathway
- 10. asterism
- 11. Milky Way bulge
- 12. Earth and sky
- 16. beliefs
- 17. above
- 19. north to south horizon