Terrestrial planets are small with high densities and rocky surfaces ,while jovian planets are large with low densities and gaseous surfaces. In the solar system, Mars, Mercury, Earth and Venus are terrestrial planets, while Jupiter, Saturn, Uranus and Neptune are jovian planets.
The four terrestrial planets are closer to the sun and are all inner planets, while the jovian planets are farther away and are the outer planets. Mass increases further from the sun, with the inner terrestrial planets experiencing lower amounts of mass and the outer jovian planets comprising more mass than Earth just in the core of each planet. Jovian planets also have higher magnetic fields and many more moons than the terrestrial planets.