演职人员
Jim Benedict
Harry Townes
Col. Matthews
John Agar
June
Whitney Blake
Dr. A.A. Andrews
Cecil Kellaway
Dave
Charles Aidman
Kim
Gail Kobe
Dr. Easton
Edward Platt
Space Ship Crew
William Traylor
Space Ship Crew
John Clarke
Space Ship Crew
Joel Lawrence
Prof. Logan
Jon Lormer
Sen. Royce
Robert Cornthwaite
Technician (uncredited)
Sam Edwards
Member of Senate Investigating Committee (uncredited)
Frank Gerstle
Technician (uncredited)
比夫·麦奎尔
Mr. Duffy (uncredited)
Ed Prentiss
Technician (uncredited)
Bert Remsen