Saturn.
Saturn has the lowest density, but it has more than 31 moons.
Mercury is the smallest of the four inner planets and closest to the sun. It is also the smallest of all eight planets.
volume. This gives the average density of each planet, which varies depending on the planet's composition and structure.
Neptune(If you include dwarf planets it is Eris)
Mercury has the second greatest density (behind Earth), with a density of 5.43 g/cm3 (5430 kg/m3).
Mercury has the second lowest density of any planet in the solar system. Saturn has the lowest density of any other planet.
Saturn has the lowest density, but it has more than 31 moons.
Saturn:)Saturn is the least dense of the gas giants, even out of all of the planets in our solar system. Its average density is around 0.7 g/cc (less than water)
Mercury is the smallest of the four inner planets and closest to the sun. It is also the smallest of all eight planets.
All the gas giants; in our Solar System, Saturn has the lowest density (less than the density of water).
volume. This gives the average density of each planet, which varies depending on the planet's composition and structure.
Neptune(If you include dwarf planets it is Eris)
No. In our solar system, Saturn has the lowest density.
The planet with the least mass and smallest is Mercury. The planet with the lowest density is Saturn
Mercury has the second greatest density (behind Earth), with a density of 5.43 g/cm3 (5430 kg/m3).
The planet with the lowest average temperature in our solar system is Neptune. Its temperature can drop as low as -360°F (-218°C).
The phrase "least dense planet" refers simply to the planet with the lowest density, which is the planet's mass divided by its volume. In our solar system, Saturn is the least dense planet with a density of roughly 0.7 (water, by comparison, has a density of 1, or 1 gram per cubic centimeter). This is attributed to its large outer envelope of gas - although it is thought to have a denser rocky core.