Inner/Outer characteristics

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Across
  1. 2. can be a characteristic for planets temperature (outer)
  2. 5. from the sun can be a characteristic for planets measurement for how far they are from the sun (outer)
  3. 6. surface is a characteristic for planets feelings (inner)
  4. 7. a characteristic for planets sizes (inner)
  5. 9. can be a shared characteristic for planets
Down
  1. 1. is a characteristic for planets temperatures (inner)
  2. 3. can be a characteristic for planets smell (outer)
  3. 4. is characteristic for planets feelings (inner)
  4. 8. core can also be a shared characteristic for planets