Across
- 3. Planet with the longest year
- 5. The lightest metal on earth
- 7. The tallest man in history
- 11. First fully electric car
- 12. Star closest to the sun
- 13. Mach is the speed of
- 15. The heaviest metal in the world
- 16. Heaviest gas in the world
- 18. The most feared pirate in history
- 19. 172000 meters per second is the speed of
Down
- 1. The tallest bird to ever exist
- 2. Planet with the shortest day
- 4. Lightest gas in the universe
- 6. Planet with two moons
- 8. Planet with the longest day
- 9. 1100 decibels of sound would create a
- 10. Closest galaxy to our own
- 14. Thompson Guernsey developed Maines first radio station where
- 17. Planet with the shortest year