Composition of the planets

Composition of the planets

1. Mars

   • Iron and iron sulphide core
   • Mantle of silicate rock
   • Crust thicker than earths

2. Saturn

   • Small core of rock and ice
   • Thicker atmosphere than Jupiter
   • Outer mantle of liquid hydrogen

3. Pluto

   • Giant rocky core
   • Thin icy crust
   • Mantle rich in water ice

4. Neptune

   • Small core of rock and ice
   • Slushy water inner mantle
   • Outer mantle of hydrogen

5. Venus

   • Large nickel iron core
   • Thick silicate mantle

6. Mercury

   • Giant iron core
   • Thin crust

7. Uranus

   • Small core of rock and ice
   • Slushy inner mantle

8. Earth

   • Only planet with a two part core