Astronomy

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