Astronaut College!

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Across
  1. 1. First and smallest planet in the solar system
  2. 3. Planet same size as Earth
  3. 7. Orbits the Earth
  4. 8. A dwarf planet in the Solar System
  5. 10. Someone who is trained to go to Space
  6. 11. Planet known for its rings
  7. 14. Commander who landed on the Moon
  8. 15. Planet farthest from the Sun
  9. 16. First artificial satellite
Down
  1. 2. An arrangement of stars
  2. 4. First ship to land people on the Moon
  3. 5. The center of the solar system
  4. 6. Largest planet in the solar system
  5. 9. The belt that separates Mars and Jupiter
  6. 12. 70% Water 30% Land
  7. 13. Covered in toxic gases
  8. 17. Has smaller rings than Saturn