Sun and Earth

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Across
  1. 2. earth's natural satellite
  2. 3. closest star to earth
  3. 5. number of planets in our solar system
  4. 6. layer with all water bodies
  5. 9. red planet
  6. 10. the dwarf planet
  7. 11. thickest layer in the center of the earth
  8. 12. biggest planet of solar system
Down
  1. 1. layer made of gases
  2. 4. layer with all land forms
  3. 7. planet with life
  4. 8. molten rock that comes out of volcano