Across
- 2. a collection of star systems
- 6. pass through
- 10. connected with or engaged in the exchange of goods
- 11. space: any location outside the Earth's atmosphere
- 13. a craft capable of traveling in outer space
- 14. any celestial body orbiting around a planet or star
Down
- 1. not fit for habitation
- 3. of or relating to or associated with the moon
- 4. incapable of being avoided or prevented
- 5. of or relating to or caused by a poison
- 7. someone who travels to unknown regions to make discoveries
- 8. a person trained to travel in a spacecraft
- 9. very unlikely to be true, and difficult to believe
- 12. lengthen or extend in duration or space