Across
- 1. Scientific studies or tests
- 4. Atmospheric flying machine for transport
- 7. A Vehicle for travelling in space
- 8. Ill feeling after constant movement
- 13. A person who travels to space
- 14. Number of people living somewhere
- 16. The outer layer of an object
Down
- 2. The universe outside earth's atmosphere
- 3. Brave
- 5. Second in command to a pilot
- 6. unsafe
- 9. Causing discomfort and stress
- 10. The natural satellite of the earth
- 11. To set in motion
- 12. Very loud
- 15. Related to the moon