) ▁▁▁▁▁▁▁▁▁▁ ▁( Inter im ) ▁ ▁Europe ▁ ▁North ▁America ▁▁▁▁▁ ▁( Inter im ) ▁▁ ▁( Inter im ) ▁▁▁▁ ▁( Inter im ) ▁ ▁O ce ania ▁ ▁South ▁America ▁▁▁▁▁ ▁( S us p ended ) ▁▁▁▁▁▁▁▁ ▁( S us p ended ) ▁▁ ▁( Observer ) ▁ ▁Term in ated ▁national ▁members ▁ ▁General ▁Ass emb lies ▁ ▁Since ▁ 1 9 2 2 , ▁the ▁I AU ▁General ▁Assembly ▁meets ▁every ▁three ▁years , ▁with ▁the ▁exception ▁of ▁the ▁period ▁between ▁ 1 9 3 8 ▁and ▁ 1 9 4 8 , ▁due ▁to ▁World ▁War ▁II . ▁After ▁a ▁Polish ▁request ▁in ▁ 1 9 6 7 , ▁and ▁by ▁a ▁controvers ial ▁decision ▁of ▁the ▁then ▁President ▁of ▁the ▁I AU , ▁an ▁Ext ra ordinary ▁I AU ▁General ▁Assembly ▁was ▁held ▁in ▁September ▁ 1 9 7 3 ▁in ▁Wars aw , ▁Poland , ▁to ▁comm emor ate ▁the ▁ 5 0 0 th ▁anni versary ▁of ▁the ▁birth ▁of ▁Nicol aus ▁Cop ern icus , ▁soon ▁after ▁the ▁regular ▁ 1 9 7 3 ▁G A ▁had ▁been ▁held ▁in ▁Sydney , ▁Australia . ▁ ▁List ▁of ▁the ▁Pres idents ▁of ▁the ▁I AU ▁S ources . ▁ ▁Commission ▁ 4 6 : ▁Education ▁in ▁astronom y ▁ ▁Commission ▁ 4 6 ▁is ▁a ▁Committee ▁of ▁the ▁Executive ▁Committee ▁of ▁the ▁I AU , ▁playing ▁a ▁special ▁role ▁in ▁the ▁discussion ▁of ▁astronom y ▁development ▁with ▁govern ments ▁and ▁scientific ▁academ ies