Moon House

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Across
  1. 3. Layer of gases surrounding a planet
  2. 6. First model or test version of a design
  3. 7. A person trained to travel in space
  4. 9. A person who designs solutions to problems
  5. 13. Moon dust and crushed rock
  6. 14. Harmful energy from space
  7. 15. The red planet humans may visit next
Down
  1. 1. Something that is built or constructed
  2. 2. Rounded structure shape
  3. 4. Machine that can work automatically
  4. 5. Able to operate without human control
  5. 8. A protected place to live
  6. 10. Machine that builds objects layer by layer
  7. 11. A permanent settlement of people
  8. 12. Relating to the Moon