莱昂纳多·迪卡普里奥 Leonardo DiCaprio ....Narrator
K. Megan McArthur ....Herself - Astronaut
Scott D. Altman ....Himself - Shuttle Commander
Andrew J. Feustel ....Himself - Astronaut
John M. Grunsfeld ....Himself - Mission Specialist
Gregory C. Johnson ....Himself - Shuttle Pilot