Across
- 2. friend or foe?
- 3. the Red planet
- 5. humans lose this density in space
- 7. occurring between planets
- 11. radio waves, infrared, X, and gamma rays
- 13. gases surrounding planets
- 14. to take control of or settle
Down
- 1. bodies found in space
- 4. O3
- 6. force causing bodies to fall towards center of earth
- 8. faction or fantasy
- 9. indicates we may not be alone in the cosmos
- 10. founder of SpaceX
- 12. other body likely to be transformed
- 15. leader in space exploration