Curious Minute answer

What is the only planet in our solar system that is less dense than water?

The answer

Saturn

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Why it's right

Saturn is the only planet in our solar system with an average density lower than water. It is made mostly of hydrogen and helium. NASA uses the image of a giant bathtub to help explain that low average density.

NASA Science: facts

Did you know?

Saturn's rings are made mostly of pieces of ice, with some rock and dust mixed in. They are not a solid surface.

NASA Science: facts

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Sources: NASA