Across
- 2. - a task or goal with a purpose
- 4. - arranged by time
- 6. - what is yet to come
- 7. — a person who discovers new places
- 8. - a puzzling situation that seems impossible
- 11. - an object from the past
- 15. - very old; from a long time ago
- 16. - what is happening now
- 17. - a sci-fi tunnel through space/time
- 18. - time that already happened
- 19. - someone who creates new things
- 20. - an old story that may not be true
- 21. - a group with cities, laws, and culture
Down
- 1. - another world or universe
- 3. - a trip from one place (or time) to another
- 4. - 100 years
- 5. - a large period in history
- 9. - finding something for the first time
- 10. - a small, useful device
- 12. - something from or about the future
- 13. - a person who studies history
- 14. - tools and machines people use