Robert and Françoise Monier make a hot air balloon to fly to the stratosphere. After a visit to Venus, they return home, but have only aged 15 days whereas 25 years have passed on Earth.
Françoise Monier, aeronaut
Robert Monier, Françoise's husband
Lucien Marchand, laboratory boy
First smooth-talker
Banker Antoine
Béatrice
Director
Marie
Pépin
Gaby
Charles
Young bridegroom
Gustave
Venusian
Philippe
Policeman
Commander
Second smooth-talker
Uncle
Camille
Georgette Marchand
Scientist
Decorator (uncredited)
Man on the Merry-Go-Round (uncredited)
(uncredited)
Man at the sidereal station (uncredited)
Lumberjack (uncredited)
Doorman of the scientific institute (uncredited)
Waitress (uncredited)
Journalist (uncredited)
Technician of the scientific institute (uncredited)
Police station employee (uncredited)
Announcer (uncredited)
Consumer at the café (uncredited)
Chief mechanic (uncredited)
