Most NASA Space Task Group members preferred "astronaut", which survived by common usage as the preferred American term.
mˈoʊst nˈæsɐ spˈeɪs tˈæsk ɡɹˈuːp mˈɛmbɚz pɹɪfˈɜːd "ˈæstɹənˌɔːt", wˌɪtʃ sɚvˈaɪvd baɪ kˈɑːmən jˈuːsɪdʒ æz ðə pɹɪfˈɜːd ɐmˈɛɹɪkən tˈɜːm.