Diagram of the interior structure of the planet Mercury
<ol><li>Crust - 100-200km thick</li>
<li>Mantle - 600km thick</li>
<li>Nucleus - 1,800km radius</li></ol>
Joel Holdsworth (<a href="//commons.wikimedia.org/w/index.php?title=User:Joelholdsworth&amp;action=edit&amp;redlink=1" class="new" title="User:Joelholdsworth (page does not exist)">Joelholdsworth</a>)
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