Diretor/a
Ralph Ward
DIRETOR/A
George Gould
Elenco (na ordem dos créditos)
Frankie Thomas
Tom Corbett
Al Markim
Astro
Jan Merlin
Roger Manning
Jack Grimes
T.J. Thistle
Ed Bryce
Captain Steve Strong
Frank Sutton
Cadet Rattison
John Fiedler
Alfie Higgins
Ben Stone
Major 'Blastoff' Connel
Denise Alexander
Betty Corbett
Norma Clarke
Cadet Jo Spencer
Patricia Ferris
Dr. Joan Dale
Carter Blake
Commander Arkwright
John Weaver
Cadet Harvey
Margaret Garland
Ralph Camargo
Captain Roy Cowan
Jackson Beck
Narrator
Rex Marshall
Lieutenant Saunders
Wesley Lau
Captain Lane
Leon Janney
Blair
Joe De Santis
Commander Elblas
William Keene
ATOR
Ralph Riggs
Luxor
Liam Sullivan
Lt. Morse
Bill Lipton
Alex Monroe
Bill Zuckert
Brock
Geoffrey Bryant
Caretaker
Tom Poston
The Alkarian
Jack Lord
Robert H. Harris
Rusty Lane
Harry Bellaver
Dickson
Marion Brash
Gloria
Humphrey Davis
Captain Brad Farley
Jack Bittner
Beryl Bernay
Betty
Gordon Swen
Bob Hastings
Jim Myers
Woodrow Parfrey
David Sheiner
Crahan Denton
Jim Boles
Sydney Smith
Kort Falkenberg
William Johnstone
Secretary Masters
Marlene Cameron
Robert Dryden
Barker
J. Fred Muggs
Muggs 67th
Chet Stratton
'Ace of Space' Bradley
James J. Van Dyk
Professor Chambers
Jodie Morton
Clifford Sales
Michael Harvey
Capt. Steve Strong (1950)