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Across
  1. 1. Colorful arc in the sky
  2. 4. Insect with transparent wings
  3. 6. Insect with colorful wings
  4. 8. Input device for computers
  5. 9. Tall landform with peaks
  6. 11. Tall plant with large yellow flowers
  7. 12. Small cake often decorated
  8. 15. Canopy used for rain protection
  9. 16. Two-wheeled vehicle
  10. 17. Sweet treat made from cocoa
  11. 18. Large group of musicians
  12. 19. Explosive display in the sky
Down
  1. 2. Exciting journey or experience
  2. 3. Vast system of stars
  3. 4. Extinct reptile from prehistoric times
  4. 5. Valuable objects hidden away
  5. 7. Brain-teasing challenge
  6. 10. Instrument for stargazing
  7. 13. Large mammal with a trunk
  8. 14. All of space and everything within it