Rocketship X-M

Astronauts blast off to explore the moon on Rocketship X-M or "Rocketship eXploration Moon". A spacecraft malfunction and some fuel miscalculations cause them to end up landing on Mars. On Mars, evidence of a once powerful civilization is found. The scientists determine that an atomic war destroyed most of the Martians. Those that survived reverted to a caveman like existence.

• 
  Kurt Neumann
• 
  Frank Heath

• 
  Lloyd Bridges
  Colonel Floyd Graham
• 
  Osa Massen
  Dr. Lisa Van Horn
• 
  John Emery
  Dr. Karl Eckstrom
• 
  Noah Beery Jr.
  Major William Corrigan
• 
  Hugh O'Brian
  Harry Chamberlain
• 
  Morris Ankrum
  Dr. Ralph Fleming
• 
  Patrick Aherne
  Reporter #1
• 
  Sherry Moreland
  Martian girl
• 
  John Dutra
  Physician
• 
  Kathy Marlowe
  Reporter
• 
  Tom Coleman
  Reporter (uncredited)
• 
  James Conaty
  Doctor Taking Lisa's Blood Pressure (uncredited)
• 
  Sam Harris
  Reporter at Press Briefing (uncredited)
• 
  Judd Holdren
  Reporter #3 (uncredited)
• 
  Stuart Holmes
  Reporter (uncredited)
• 
  Barry Norton
  Reporter (uncredited)
• 
  Cosmo Sardo
  Reporter (uncredited)
• 
  Bert Stevens
  Reporter (uncredited)