Autobiographical account by Patrick Baudry, the second Frenchman in space, as told to journalist Benoît Fraisse. The first part retraces his African childhood, his training as a fighter and then test pilot, and his selection as a CNES astronaut in 1980. The second part recounts his training at Star City (USSR) and in Houston, the cancelled 51-E mission, and his eight-day flight aboard Space Shuttle Discovery (STS-51-G, June 1985), during which he ran French biomedical experiments. Six technical appendices describe the shuttle's flight phases, Franco-American space cooperation, the flight chronology, the Hermès spaceplane and the Ariane 5 launcher.