萨缪尔·韦斯特

Samuel West

饰：Himself - Narrator

Carol Armstrong

饰：Herself - Neil`s Second Wife

珍妮特·阿姆斯特朗

Janet Armstrong

饰：Herself - Neil`s First Wife

尼尔·阿姆斯特朗

Neil Armstrong

饰：Himself

Rick Armstrong

饰：Himself - Neil`s Elder Son

June Hoffman

饰：Herself - Neil`s Sister

Ron Huston

饰：Himself - Neil`s Boss, University of Cincinnati

Kotcho Solacoff

饰：Himself - Neil`s Best Friend

巴兹·奥尔德林

Buzz Aldrin

饰：Self - Apollo 11 Lunar Module Pilot

马克·阿姆斯特朗

Mark Armstrong

饰：Self - Neil's Younger Son

Dave Scott

饰：Self - Apollo 9 Command Module Pilot

迈克尔·柯林斯

Michael Collins

饰：Self - Apollo 11 Command Module Pilot,(as Mike Collins)

查尔斯·杜克

Charles Duke

饰：Self - Apollo 11 Cap-Com,(as Charlie Duke)