messages: 'Dans les années 1960, Hynek était devenu président du département d’astronomie de la Northwestern University et était en désaccord avec la surveillance étouffante de l’Air Force.' I'd like this text translated to english.
messages: user
messages: 'By the 1960s, Hynek had moved on as the chair of the Department of Astronomy at Northwestern University and was at odds with the stifling oversight of the Air Force.'
messages: assistant