The Solar System can be divided into two planetary divisions. Divided based upon the distance from the Sun and physical characteristics, the inner planets are termed terrestrial while the outer are respectively termed Jovian planets.
Similar to the morphology of Earth, the terrestrial planets include Mercury, Venus, Earth, Moon and Mars.
Characteristically, the inner planets share comparable sizes, densities, and structures. The composition of these worlds is rocky in nature with high boiling points. Originating from a concentration of hydrogen and helium gas and dust, the Solar System with terrestrial planets emerged.
Further, the light compounds that formed the terrestrial planets soon vaporized by their close proximity to the Sun's heat.
Between the orbits of Mars and Jupiter float numerous celestial bodies: the asteroids.
Coincidentally, the Jovian planets retained the lighter and colder gases within their compositions because of their distance.
Moreover, the Jovian planets seem far more massive than the closer planets and are able to hold hydrogen, water, ammonia, and methane within their icy atmospheres.
The Jovian planets are Jupiter, Saturn, Uranus, Neptune and Pluto.
Outside Pluto's orbit the comets reside. Every year we see them when a couple move close to the Earth