巴里·柯宾

Leonard Barrie Corbin

饰：Narrator

Sam Beddingfield

饰：Himself - Engineer

Scott Carpenter

饰：Himself - Astronaut

William K. Douglas

饰：Himself - Astronaut Doctor

Gus Grissom

饰：Himself - Astronaut

Alan Shepard

饰：Self - Astronaut

巴兹·奥尔德林

Buzz Aldrin

饰：Self - Astronaut

Charles Conrad

饰：Self - Astronaut Candidate,(as Pete Conrad)

Paul Haney

饰：Self - NASA Spokesman,

格林·伦尼

Glynn Lunney

饰：Self - Flight Director, (as Gelnn Lunney)

Walter Cunningham

饰：Self - Astronaut

约翰·格里恩

John Glenn

饰：Self - Astronaut

吉因·克兰兹

Gene Kranz

饰：Self - Flight Director,(as Gene Krantz)

Wally Schirra

饰：Self - Astronaut

Hugh Sidey

饰：Self - LIFE Magazine Reporter,

Frank Borman

饰：Self - Astronaut

Eugene Cernan

Eugene Cernan

饰：Self - Astronaut,(as Gene Cernan)

Jay Barbree

Jay Barbree

饰：Self - NBC News Reporter,

Gordon Cooper

饰：Self - Astronaut

弗莱德·海斯

Fred Haise

饰：Self - Astronaut

Richard Gordon

饰：Self - Astronaut, (as Dick Gordon)

Christopher Kraft

饰：Self - Flight Director, (as Chris Kraft)

吉姆·洛威尔

Jim Lovell

饰：Self - Astronaut Candidate,Astronaut

George E. Mueller

饰：Self - NASA Administrator, (as George Mueller)

Stuart Roosa

饰：Self - Astronaut,(as Stu Roosa)

Guenter Wendt

饰：Self - Launch Pad Director, (as Gunther Wendt)

迪克·斯雷顿

Deke Slayton

饰：Self - Astronaut,(archive footage)