The International Astronomical Union comprises almost 10,145 members from 70 countries who are involved in astronomical research at the PhD level and beyond.
ðɪ ˌɪntɚnˈæʃənəl ɐstɹənˈɑːmɪkəl jˈuːniən kəmpɹˈaɪzᵻz ˈɔːlmoʊst tˈɛn,wˈʌnhˈʌndɹɪd fˈoːɹɾi fˈaɪv mˈɛmbɚz fɹʌm sˈɛvənti kˈʌntɹiz hˌuː ɑːɹ ɪnvˈɑːlvd ɪn ɐstɹənˈɑːmɪkəl ɹᵻsˈɜːtʃ æt ðə pˌiːˈeɪtʃ dˈiː lˈɛvəl ænd bᵻjˈɔnd.