parameters: (self)
docstring: Updates all the entities with the correct ship and planet objects
  
          :return:
docstring_summary: Updates all the entities with the correct ship and planet objects
docstring_tokens: Updates all the entities with the correct ship and planet objects
function: def _link(self):
          """
          Updates all the entities with the correct ship and planet objects
  
          :return:
          """
          for celestial_object in self.all_planets() + self._all_ships():
              celestial_object._link(self._players, self._planets)
function_tokens: def _link ( self ) : for celestial_object in self . all_planets ( ) + self . _all_ships ( ) : celestial_object . _link ( self . _players , self . _planets )