Across
- 2. travel A journey through space and time
- 4. A person who studies the universe and its origins
- 5. traveler A person from the future
- 6. A futuristic weapon, often energy-based
- 9. A being with superhuman abilities
- 10. A fictional world with advanced technology
- 12. A highly intelligent computer
- 15. A fictional device for instantaneous travel
- 16. A robot with human-like appearance and behavior
- 17. A person who studies the future
- 18. A highly advanced alien race
Down
- 1. cloak A device used to conceal one's identity
- 3. A device used to communicate over vast distances
- 7. A planet outside our solar system
- 8. A spaceship capable of interstellar travel
- 11. A futuristic city often depicted in science fiction
- 13. reality A parallel universe or dimension
- 14. A self-replicating machine