Across
- 3. - Precious gemstone (7 letters)
- 6. - Device for slowing descent (9 letters)
- 7. - Hidden wealth (8 letters)
- 11. - Eighth planet from the sun (7 letters)
- 12. - Festive celebration (8 letters)
- 13. - Electric discharge during a storm (10 letters)
- 15. - Colorful meteorological phenomenon (7 letters)
- 16. - Largest planet in our solar system (7 letters)
- 18. - Eight-armed sea creature (7 letters)
- 19. - Marsupial native to Australia (8 letters)
- 20. - Large mammal with tusks (8 letters)
Down
- 1. - Bright celestial object (6 letters)
- 2. - Explosive displays (9 letters)
- 4. - Insect with colorful wings (10 letters)
- 5. - Massive floating block of ice (7 letters)
- 8. - Tall flowering plant (10 letters)
- 9. - Illumination from Earth's satellite (9 letters)
- 10. - Massive system of stars (6 letters)
- 14. - Explorer of outer space (9 letters)
- 17. - Pollinating insect (8 letters)