L'Astronaute

Nicolas Giraud

Jim Desforges

Mathieu Kassovitz

Alexandre Ribbot

Hélène Vincent

Odette Desforges, Jim's grandmother

Hippolyte Girardot

Monsieur Dominique, Jim's superior at Arianespace

Bruno Lochet

André Lavelle

Ayumi Roux

Izumi Sayako

Carole Trevoux

Sylvie Desforges, Jim's mother

Féodor Atkine

Hector Fernbach, mathematician

Jean-Henri Compère

Gérard Desforges, Jim's father

Anne Charrier

Eva Veredia, Arianespace's security manager

Jérémie Renier

Muller, captain of the DGSI

Philippe Hagège

Swimming pool guard

Christophe Rossignon

Jim's grandfather (photo)

Noah Benzaquen

Jim as a child (photo)

Pauline Fugaldi

Jim's Secretary