Elenco
Lloyd Bridges
Charlie Englehardt
Jeremy Slate
Astronaut Capt. Rick Lawrence
Jim McMullan
Astronaut Ben Pelham
Morgan Paull
Astronaut Dave Anderson
Michael Link
Eli 'E.J.' Mackernutt, Jr.
John Carradine
Jacob Avril
Jack Callahan
Dr. Jack Smathers
Charles Conrad
Himself
Walter Brooke
Whitehead
Keene Curtis
Tom Estes
Edward Faulkner
Eli Mackernutt, Sr.
Jon Cedar
Hans Hartman
Barbara Faulkner
Mrs. Mary Mackernutt
Stephen Rogers
Joey Williams
Equipe
Andrew V. McLaglen
Director
Jon Boothe
Writer
William R. Shelton
Novel
J.J. Jones
Director of Photography
Patrick Williams
Original Music Composer
John F. Schreyer
Editor
John Cutts
Producer
Allen E. Smith
Art Direction
Carl Kugel
Associate Producer
Jack Baur
Casting
Robert De Vestel
Set Decoration
Mark Evans
Production Supervisor
Joseph Silver
Post Production Supervisor
Maurie M. Suess
Unit Production Manager
Jack Barry
Assistant Director
Joe Zomar
Special Effects
Lionel Newman
Music Supervisor
Joe W. Schmitt
Technical Advisor