
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 determined that an atomic war destroyed most of the Martians. Those that survived reverted to a caveman like existence.

as Colonel Floyd Graham

as Dr. Lisa Van Horn

as Dr. Karl Eckstrom

as Major William Corrigan

as Harry Chamberlain

as Dr. Ralph Fleming

as Reporter #1

as Martian girl

as Physician

as Reporter

as Reporter (uncredited)

as Doctor Taking Lisa's Blood Pressure (uncredited)

as Reporter at Press Briefing (uncredited)

as Reporter #3 (uncredited)

as Reporter (uncredited)

as Reporter (uncredited)

as Reporter (uncredited)

as Reporter (uncredited)