Mars

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Across
  1. 2. main difference between our planets
  2. 5. planet
  3. 7. system of planets
  4. 10. suitable or good enough to live in
  5. 11. not in the ... future
  6. 12. (CO2)what we need to terraform mars
  7. 13. without it we would never be able to travel to space
Down
  1. 1. mars' nickname
  2. 3. process of planetary engineering
  3. 4. National Aeronautics and Space Administration
  4. 6. where the planets are
  5. 8. what we need to travel to space
  6. 9. our purpose
  7. 11. is the ..... planet from the Sun
  8. 14. our planet