Neptune

Planet order: The eighth planet from the Sun
Distance from Sun: 4.5 billion km
Mass: 102.4x10^24 kg
Diameter 49,493 km
Rotation: 17.24 hours

Revolution: 165 years
# of Moons: 13
Type of Planet: Jovian 

Planet description: Planet Neptune is eighth planet from Sun. It is the fourth-largest planet by diameter and third largest by mass. Neptune is 17 times the mass of Earth and slightly more massive than its near-twin Uranus. Neptune consists of upper cloud tops, atmosphere, mantle and core. The temperature at clouds top is -210o C (-346o F). The large moon name is Triton. Neptune has much more gas and ice inside than Earth.

Interesting Facts:
Neptune was the god of the water and was a son of Chronos and a brother of Jupiter (Zeus) also brother of Pluto (Hades). Neptune's weather is similar to Jupiter and Saturn.

Mars

                                                                                                                   

Diagram:

Planet order: the fourth planet from the Sun. 

Distance from the Sun 228 km. 

                        23

Mass is 6,4* 10   kg.         Diameter is 6794 km. 

Rotation is 24 hours 37 minutes by Earth time.       Revolution is 686 days by Earth day count. 

Number of Moons are 2: Phobos and Deimos. They are terrestrial.

Planet Description: 

Scientist described Mars as the “Red Planet”, as the iron oxide prevalent on its surface gives it a reddish appearance. Mars is terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the volcanoes, valleys, deserts and polar ice caps of Earth.

Interesting facts:

Mars has water. When humans saw first those formations, they called canals. Mars is most similar to Earth and also has 4 seasons.