Famous astronauts

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Across
  1. 2. - The fourth planet from the sun.
  2. 5. - An ice giant planet.
  3. 6. - A celestial body orbiting a star.
  4. 8. - A celestial object with an icy core and a bright tail.
  5. 9. - The second planet from the sun.
  6. 11. - A dwarf planet.
  7. 13. The eighth planet from the sun.
  8. 14. The ISS travels 5 miles in one ___________
  9. 15. - Earth's natural satellite.
Down
  1. 1. - The third planet from the sun.
  2. 3. - The star at the center of our solar system.
  3. 4. - The largest planet in our solar system.
  4. 7. - A rocky object in space.
  5. 10. - The boundless expanse beyond Earth's atmosphere.
  6. 12. - The closest planet to the sun.
  7. 14. - A planet with prominent rings.