World Planet Day

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Across
  1. 3. Eighth and most distant planet in our solar system.
  2. 4. Fourth planet from the Sun
  3. 7. Seventh planet from the Sun and has the third-largest diameter in our solar system.
  4. 8. Largest planet in the solar system and fifth from the sun
Down
  1. 1. Smallest planet and nearest to the Sun.
  2. 2. Second planet from the Sun and is closest to Earth.
  3. 5. sixth from the sun and the second largest planet in the solar system
  4. 6. Third planet from the Sun and the only place we know of so far that's inhabited by living things.