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Definition

Density
Density is a measure of the amount of mass or matter in any given volume. It refers to how "packed" the material of an object is. The SI unit of density is the kilogram per cubic meter (kg/m³). An object's density (D) is defined as its mass (m) divided by its volume (V): D=m/V. Saturn's mass is 5.6846 × 10²⁶ kg and its volume is 8.2713 × 10¹⁴ km³; therefore, Saturn's density is equal to 687 kg/m³. Water's density is 1,000 kg/m³.

What is the Earth's density? It is 5,515 kg/m³. The Earth is much denser than Saturn. In fact, Saturn has the lowest density of all the planets in our solar system.
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Trivia  •  Fun Facts

Do you know?
Is the planet Saturn more dense than water?
Saturn is actually less dense than water, meaning that Saturn would float on water. Imagine if you had a swimming pool big enough for Saturn!