Jupiter has the largest atmosphere
Saturn has the lowest density
Jovian planets are more massive and lower in average density. Terrestrial planets are smaller and higher in average density.
The four Jovian planets
No. Terrestrial planets are much denser than Jovian planets.
Saturn is the least dense out of all of the planets in our solar system. Its average density is around 0.7 g/cc (less than water). It also has a thick Hydrogen/Helium atmosphere.
The average density of Jupiter is 1.3 (g/cm3), which is about one fourth as dense as the planet Earth. Jupiter is the largest planet in our solar system and the closest gas giant to the sun.
The Earth has the greatest average density, of all the planets.
No, size does not go with density. The Earth is the most dense planet in the solar system, but it is the 4th smallest planet.
Mars is the least dense of the rocky planets.
The Exosphere
The density of a planet depends basically on the density of the materials that make the planet up. It is a weighted average of those densities.
Because the outer planets are composed of mainly gas or ice, whereas the inner planets are composed of rock which has a higher density.
Average density of the planet