The solar system is composed of all the planets and their satellites as well as other objects which turn around the Sun.

It consists of two classes of planets : The Inner planets (terresterial planets) and The Outer planets (giant planets).

 

Let us begin with :

The events of our galaxy ...

... The Sun, our star !

                     

Now we are going to see both categories of planets compose our Solar System.

 

I. The Inner Planets

 

 

 

Distance to the Sun	Near
Size	Small
Composition	Extern : Solid ; silicates rocks, metal and iron Intern : Fluid ; core, crust and mantle
Temperature (°c)	more than - 70°
Density (g.cm p3)	4 to 5.5

 

In the class of the Inner planets , we have :

 

                  

 

                

            

Mars seen from the Planet Earth.

On this picture, all photos of the planet Mars are on the same scale, this is the distance Earth-Mars that varies.

Photos taken by : A.R.E.C.A

 

II. The Outer Planets

 

Distance to the Sun	Distant
Size	Big
Composition	Extern : Gaseous ; Outer layer of gaseous molecular hydrogen, coat of liquid metallic hydrogen Intern : Fluid ; a pit of rocks and ices
Temperature (°c)	< at - 130°
Density (g.cm p3)	~ 1

In the Outer planets, we have :

Jupiter seen from Reunion Island on the 12th of February circa17:41 GMT.

 

 

 

Saturn seen from the Earth.

Photo taken by : A.R.E.C.A