Our Home Planet

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Across
  1. 1. the red planet
  2. 4. arrive on the ground
  3. 5. when you are alone, you feel...
  4. 6. American agency for space programs
  5. 8. synonym of hope
  6. 12. you need it to drive in space
  7. 15. the little green men in space
Down
  1. 2. outfit of astronauts
  2. 3. Aliens' vehicule
  3. 7. when you colonize another planet, you ... on it.
  4. 9. man who can go into space
  5. 10. leave the ground
  6. 11. synonym of pionneer
  7. 13. our home planet
  8. 14. synonym of repair