NASA applies the term astronaut to any crew member aboard NASA spacecraft bound for Earth orbit or beyond.
nˈæsɐ ɐplˈaɪz ðə tˈɜːm ˈæstɹənˌɔːt tʊ ˌɛni kɹˈuː mˈɛmbɚɹ ɐbˈoːɹd nˈæsɐ spˈeɪskɹæft bˈaʊnd fɔːɹ ˈɜːθ ˈɔːɹbɪt ɔːɹ bᵻjˈɔnd.