Outer Space puzzle

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Across
  1. 2. the biggest planet in our solar system
  2. 5. the plant most known for its rings
  3. 6. the only planet with life
  4. 8. the closest planet to the sun
Down
  1. 1. have tails that move in the solar wind
  2. 3. was the 9th planet
  3. 4. known for its redness
  4. 7. the space between mars and jupiter