Planets Crossword

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Across
  1. 3. First planet discovered with a telescope
  2. 7. Most inhabitable planet
  3. 8. The largest planet
Down
  1. 1. The hottest planet
  2. 2. Known as the red planet
  3. 4. Furthest from the sun
  4. 5. Known for its "rings"
  5. 6. Closest planet to the sun