Conquest of Space

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.

• 
  Byron Haskin

• 
  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
• 
  Iphigenie Castiglioni
  Mrs. Heinz Fodor
• 
  Rosemary Clooney
  Musical Number (archive footage) (uncredited)