Each planet in our solar system possesses a distinct density, which is a measure of the concentration of matter within its volume. For example, the gas giant Jupiter has a relatively low average density due to its primarily gaseous composition. In contrast, the terrestrial planets, such as Mercury, Venus, Earth, and Mars, have higher average densities due to their rocky and metallic compositions. These density variations contribute to the different gravitational pull, atmospheric conditions, and geological features observed on each celestial body.