planets

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Across
  1. 3. what planet has no moon?
  2. 4. what planet smells the worst?
  3. 6. what planet is possibly a failed star?
  4. 7. what planet has a material that is technology rarer then diamonds
Down
  1. 1. what planet are we most likely to visit first?
  2. 2. what planet rains diamonds?
  3. 5. what animal existed before Saturn had rings?