Breaking the Sound Barrier

Since 1922, Boulogne-Billancourt cinema studios have welcomed the greatest actors, directors and technicians of French cinema and have given birth to many masterpieces.

In 1519, Portuguese explorer Fernand de Magellan and his men embarked on an expedition that would forever change the way we see the world. Like Christopher Columbus before him, he set out in search of a western sea route to Asia's legendary Moluccan archipelago.

In the heart of central Europe are some of the world’s most impenetrable military strongholds. In France, 160 megastructure fortresses still line the country’s borders 3 centuries after they were constructed. As solid as ever, how did they withstand attack after attack? Was the secret in their materials? Their shape? In fact, the strength and resilience of these megastructures is due to the genius of one man: Sébastien le Prestre de Vauban.

Art and science have worked together to allow cinema to switch to color. Numerous processes have succeeded one another to try to solve this difficulty.

This film consists of three parts. The first dramatizes the life of the founder of Soviet astronautics, Konstantin Tsiolkovsky; the second describes the development of rocket technology; and the third visualizes the future with enactments of the first manned spaceflight, spacewalk, space station construction and humans on the moon.

James Stewart plays aeronautical engineer Theodore Honey, the quintessential absent-minded professor: eccentric, forgetful, but brilliant. His studies show that the aircraft being manufactured by his employer has a subtle but deadly design flaw that manifests itself only after the aircraft has flown a certain number of hours. En route to a crash site to prove his theory, Honey discovers that he is aboard a plane rapidly approaching his predicted deadline.

Bruce, the owner of an aerospace company, is infatuated with Jennifer and hires her to be his biographer so that he can be near her and win her affections. Is she actually a Russian spy trying to obtain aerospace secrets?