SOLAR SYSTEM

  •  

     

     

     

     

        

    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