The only planet in the solar system with a density less than that of water

Let's find possible answers to "The only planet in the solar system with a density less than that of water" crossword clue. First of all, we will look for a few extra hints for this entry: The only planet in the solar system with a density less than that of water. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.