Alll about universe

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Across
  1. 4. This planet has ring made up of rock and ice
  2. 6. The smallest plant in the solar system
  3. 7. The planet we live on
Down
  1. 1. The coldest planet on the Earth
  2. 2. The largest planet in the solar system
  3. 3. The hottest planet in the solar system
  4. 5. The planet farthest from the Sun