Astronomy

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Across
  1. 2. the biggest planet in our galaxy
  2. 5. space debris that orbits the Jovian planets
  3. 9. solid planets made of rocky material
  4. 10. the study of celestial objects and phenomena; space
Down
  1. 1. the edge of the solar system
  2. 3. our planet of existence
  3. 4. the coldest planet
  4. 6. the number of planets of our solar system
  5. 7. the 2nd largest planet
  6. 8. the closest planet to the sun