Across
- 2. gather objects
- 4. modesty
- 14. you are not alone
- 15. alien
- 17. orbiting device
- 20. no limit
- 21. waste
- 22. opposed to past
Down
- 1. possibilities
- 3. images
- 5. advances
- 6. travel to unknown places
- 7. Einstein was one
- 8. tiny piece of something
- 9. men and women
- 10. expensive
- 11. Mars or Venus
- 12. hazardous
- 13. useful when you're lost
- 16. duty
- 18. trip
- 19. information