Space/elementary

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Across
  1. 3. The name of our planet
  2. 6. A person who travels
  3. 8. We send them to space
  4. 9. The forth planet from the sun
  5. 10. A person who has his own business
  6. 11. He builds and makes projects
Down
  1. 1. We breathe it
  2. 2. Opposite of cheap
  3. 4. He flies the rocket
  4. 5. It shines at night
  5. 7. We send rockets there