Members of solar system

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Across
  1. 2. One of the metal present in core of the earth
  2. 3. Coldest planet
  3. 9. Here water exists in all three states
  4. 10. Failed star
  5. 11. First satellite by mankind
Down
  1. 1. Has the thinnest atmosphere
  2. 4. Lightest planet
  3. 5. It has rings but it is not Saturn
  4. 6. Part of the sun visible during total solar eclipse
  5. 7. Surface has lots of iron oxide
  6. 8. Brightest planet