Essay on Jupiter and Saturn
Those which reside inside the asteroid belt named the 'Inner Solar System' namely Mercury, Venus, Earth and Mars designated the terrestrial or rocky planets whilst those orbiting beyond the asteroid belt, Jupiter, Saturn, Uranus and Neptune classified as the 'Jovian Planets comprise the 'Outer Solar System'. The term Jovian is derived from Jupiter, which describes the remaining three planets as Jupiter-like.
Unlike the inner terrestrial planets, the Jovian worlds are composed of gas, primarily hydrogen and helium and therefore do not have a solid surface.
They are the four largest planets in our solar system if not by mass, then by diameter with …show more content…
The material composition of a protoplanetary disk may vary, but it is considered to be predominately hydrogen and helium (98%); hydrogen compounds (1.4%) in the form of water, methane and ammonia; with the so called 'dust' as metals (0.2%) such as iron, nickel and aluminium associated with rock (0.4%) containing various minerals. These constituent materials will be found throughout the disk, but their abundances will be greater towards the centre of the system due to the gravitational pull, and become more rarefied near the outer edges.
Next we have to consider why of the eight planets existing in our solar system, the nearest