On a marché sur la Lune
The series used traditional animation techniques and adhered closely to the original books, going so far as to transpose some frames from the original books directly to screen. In the episodes "Destination Moon" and "Explorers on the Moon", 3D animation was used for the moon rocket—an unusual step in 1989. Each frame of the animation was then printed and recopied onto celluloid, hand painted in gouache, and then laid onto a painted background. The rocket seen in the title sequence is animated using the same 3D techniques.