Challenging puzzle for experienced crossword solvers
Red Planet Frontier Essentials
Moderate difficulty suitable for most players
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Across
- 1. To emit energy, Mars colonists must shield from it
- 3. Layer of gases surrounding Mars, mostly carbon dioxide
- 4. Controlled environment to grow plants on Mars
- 6. To send a spacecraft from Mars back to Earth or orbit
- 8. Force generated to propel spacecraft from Mars
- 11. Vital gas produced from Martian atmosphere for breathing
Down
- 2. Type of energy harnessed from Mars’ sun
- 5. Layer of loose material covering Martian surface
- 7. Adjective relating to the planet Mars
- 9. Shelter designed to support life on Mars
- 10. Permanent group of humans living on Mars
- 12. Explorer vehicle designed to traverse Martian terrain