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Gregory Peck as Charles Keith |
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Richard Crenna as Jim Pruett |
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David Janssen as Ted Dougherty |
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James Franciscus as Clayton Stone |
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ჯინ ჰეკმენი as Buzz Lloyd |
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Lee Grant as Celia Pruett |
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Nancy Kovack as Teresa Stone |
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Mariette Hartley as Betty Lloyd |
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Scott Brady as Public Affairs Officer |
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Frank Marth as Air Force Systems Director |
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Craig Huebing as Flight Director |
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John Carter as Flight Surgeon |
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Vincent Van Lynn as Aerospace Journalist |
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George Gaynes as Mission Director |
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Tom Stewart as Houston Cap Com |
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Duke Hobbie as Air Force Titan Specialist |
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Walter Brooke as Network Commentator |
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Dennis Robertson as Launch Director |
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Kenner G. Kemp as Guest in Observation Room (uncredited) |
| Directing | John Sturges | Director |
| Writing | Martin Caidin | Novel |
| Production | M.J. Frankovich | Producer |
| Camera | Daniel L. Fapp | Director of Photography |
| Editing | Walter Thompson | Editor |
| Art | Lyle R. Wheeler | Production Design |
| Art | Frank Tuttle | Set Decoration |
| Directing | John Franco | Script Supervisor |
| Camera | Nelson Tyler | Aerial Camera |
| Camera | W. Wallace Kelley | Second Unit Director of Photography |
| Crew | Lawrence W. Butler | Special Effects |
| Crew | Donald C. Glouner | Special Effects |
| Sound | Les Fresholtz | Sound |
| Sound | Arthur Piantadosi | Sound |
| Crew | Buddy Van Horn | Stunt Double |
| Directing | Daniel McCauley | Assistant Director |
| Crew | Norman Stuart | Dialogue Coach |
| Production | Frank Capra, Jr. | Associate Producer |
| Crew | Robie Robinson | Special Effects |
| Directing | Ralph E. Black | Second Unit Director |
| Costume & Make-Up | Seth Banks | Costumer |
| Production | William J. O'Sullivan | Production Manager |
| Writing | Mayo Simon | Screenplay |
