Cast

Lloyd Bridges

Charlie Englehardt

Jeremy Slate

Astronaut Capt. Rick Lawrence

Jim McMullan

Astronaut Ben Pelham

Morgan Paull

Astronaut Dave Anderson

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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

Crew

Andrew V. McLaglen

Director (Directing)

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Jon Boothe

Writer (Writing)

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William R. Shelton

Novel (Writing)

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J.J. Jones

Director of Photography (Camera)

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Patrick Williams

Original Music Composer (Sound)

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John F. Schreyer

Editor (Editing)

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John Cutts

Producer (Production)

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Allen E. Smith

Art Direction (Art)

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Carl Kugel

Associate Producer (Production)

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Jack Baur

Casting (Production)