The density of Mars is 3.93 g/cm³, which is significantly lower than the densities of other terrestrial planets. For example, the density of Earth is 5.51 g/cm³, the density of Venus is 5.24 g/cm³, and the density of Mercury is 5.43 g/cm³.
The lower density of Mars is due to a combination of factors, including the planet's smaller size, lower gravity, and higher concentration of lighter elements such as oxygen and silicon.
