A team of American astronauts leave their space station on the first mission to Mars, but the captain's religious beliefs may get in the way.
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| Writing | Philip Yordan | Adaptation |
| Writing | George Worthing Yates | Adaptation |
| Writing | Barré Lyndon | Adaptation |
| Directing | Byron Haskin | Director |
| Writing | Willy Ley | Book |
| Production | George Pal | Producer |
| Production | Frank Freeman Jr. | Associate Producer |
| Sound | Van Cleave | Original Music Composer |
| Costume & Make-Up | Wally Westmore | Makeup Artist |
| Visual Effects | Ivyl Burks | Visual Effects |
| Visual Effects | Irmin Roberts | Visual Effects |
| Visual Effects | John P. Fulton | Visual Effects |
| Writing | Chesley Bonestell | Book |
| Art | Sam Comer | Set Decoration |
| Visual Effects | Jan Domela | Visual Effects |
| Editing | Everett Douglas | Editor |
| Art | Frank R. McKelvy | Set Decoration |
| Camera | Lionel Lindon | Director of Photography |
| Art | J. McMillan Johnson | Art Direction |
| Art | Hal Pereira | Art Direction |
| Visual Effects | Paul K. Lerpae | Visual Effects |
