Across
- 4. Astronomical event - temporarily
- 7. Between the inner and outer planets
- 9. Not visible to the naked eye
- 11. An observatory
- 12. A strange creature
- 16. Can be bright and can be dim
- 17. Form at the end of some stars' lives
- 18. Above us
- 19. Our solar system belongs to
Down
- 1. Dwarf planet
- 2. To magnify the image of celestial body
- 3. Ninth largest celestial body
- 5. A group of visible star
- 6. A ring planet
- 7. Profession
- 8. Natural satellite
- 10. Small icy dirt balls
- 13. To move around a line
- 14. The study of everything in the universe
- 15. A force