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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.
Walter Brooke
Gen. Samuel T. Merritt
Eric Fleming
Capt. Barney Merritt
Mickey Shaughnessy
Sgt. Mahoney
Phil Foster
Jackie Siegle
William Redfield
Roy Cooper
William Hopper
Dr. George Fenton
Benson Fong
Imoto
Ross Martin
Andre Fodor
Vito Scotti
Sanella
John Dennis
Donkersgoed
Michael Fox
Elsbach
Joan Shawlee
Rosie McCann
