Puzzle

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Across
  1. 1. – Area beyond Earth
  2. 3. – Glowing gas sphere
  3. 4. – Space-related term
  4. 6. – Our planet
  5. 8. – Natural satellite
  6. 9. – Icy space object
Down
  1. 2. – Impact hole
  2. 3. – Plant-supporting ground
  3. 5. – Central star
  4. 7. – Solid mineral