kˈɑːzmənˌɔːt ɐlˈɛkseɪ lˈiənɑːv wʌzðə fˈɜːst pˈɜːsən tə kəndˈʌkt ɐn ˌɛkstɹəvɪhˈɪkjʊlɚɹ æktˈɪvᵻɾi ˈiːvə, kˈɑːmənli kˈɔːld ˈeɪ "spˈeɪswɔːk", ˌɔn ˈeɪtiːn mˈɑːɹtʃ nˈaɪntiːnhˈʌndɹɪd sˈɪksti fˈaɪv, ɔnðə sˈoʊviət jˈuːniənz vˈɑːskhɑːd tˈuː mˈɪʃən.
Cosmonaut Alexei Leonov was the first person to conduct an extravehicular activity (EVA), (commonly called a "spacewalk"), on 18 March 1965, on the Soviet Union's Voskhod 2 mission.