space

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Across
  1. 3. jupiter is the ___ planet
  2. 5. saturn is the only planet less dense then ___
  3. 6. mars is called the ___ because of its red soil
Down
  1. 1. uranus is ___ times bigger then earth
  2. 2. this planet might be the windiest
  3. 4. mercury is the ___ planet in our solar system
  4. 7. venus is hot enough to melt ___
  5. 8. this name is at least 1,000 years old