莱昂纳多·迪卡普里奥

Leonardo DiCaprio

饰：旁白

斯科特·阿尔特曼

Scott D. Altman

饰：Himself - Shuttle Commander

梅根·麦克阿瑟

K. Megan McArthur

饰：Herself - Astronaut

安德鲁·J·福伊斯特尔

Andrew J. Feustel

饰：Himself - Astronaut

John M. Grunsfeld

饰：Himself - Mission Specialist

Gregory C. Johnson

饰：Himself - Shuttle Pilot

Michael J. Massimino

饰：Himself - Mission Specialist

Michael T. Good

饰：Himself - Astronaut

Scott Altman

饰：Himself - Shuttle Commander

Megan McArthur

饰：Self - Astronaut,(as K. Megan McArthur)