格利高里·派克
Gregory Peck
饰:Charles Keith
理查德·克里纳
Richard Donald Crenna
饰:Jim Pruett
大卫·简森
David Janssen
饰:Ted Dougherty
詹姆斯·弗朗西斯
James Franciscus
饰:Clayton Stone
吉恩·哈克曼
Gene Hackman
饰:Buzz Lloyd
南茜·科沃克
Nancy Kovack
饰:Teresa Stone
玛丽特·哈莉
Mariette Hartley
饰:Betty Lloyd
斯科特·布兰迪
Scott Brady
饰:Public Affairs Officer
Craig Huebing
饰:Flight Director
弗兰克·马斯
Frank Marth
饰:Air Force System Director
John Carter
饰:Flight Surgeon
Vincent Van Lynn
Vincent Van Lynn
饰:Aerospace journalist
乔治·盖恩
George Gaynes
饰:Mission Director
Tom Stewart
Tom Stewart
饰:Houston Cap Com
Duke Hobbie
饰:Air Force Titan specialist
沃尔特·布鲁克
Walter Brooke
饰:Network commentator
Dennis Robertson
Dennis Robertson
饰:Launch Director
Bill Couch
饰:Russian cosmonaut (uncredited)
Mauritz Hugo
饰:Hardy (uncredited)
玛丽·琳达·拉佩利耶
Mary Linda Rapelye
饰:Priscilla Keith (uncredited)
Bruce Rhodewalt
饰:Computer technician (uncredited)
乔治
George R. Robertson
饰:VIP (uncredited)
George Smith
饰:Cape Weather Officer (uncredited)
肯纳G.肯普
Kenner G. Kemp
饰:Guest in Observation Room (uncredited)
李·格兰特
Lee Grant
饰:Celia Pruett
Don Ames
约翰·福赛思
John Forsythe
John S. Ragin
John Roy
埃迪·史密斯
Eddie Smith
Robert Strong