Planet Characteristics

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Across
  1. 3. A dwarf planet that used to be a planet
  2. 4. The smallest planet in our universe
  3. 5. The only star in our universe
  4. 6. The biggest planet in our universe
Down
  1. 1. A group of planets that are gaseous and are big
  2. 2. A group of planets that are rocky and are small