Arthur C. Clarke

Self

Gordon Honeycombe

Narrator (voice)

Arne Eggebrecht

Self

Remy Van Lierde

Self

Alex Campbell

Self

Bob Gimlin

Self

Anna Mitchell-Hedges

Self

Kenneth Arnold

Self

Paul LeBlond

Self

Derek de Solla Price

Self

Robert Taylor

Self

Michael Ward

Self

Stuart Piggott

Self

Lester Davies

Self

Luis Gomez

Self

Roger Jennison

Self

Jean Meldrum

Self

Ira Carpenter

Self

Joseph Gennaro

Self

John Sibert

Self

Geoff Swinney

Self

John Cloudesley Thompson

Self

F.G. Wood

Self

Fujio Yasuda

Self

Ian Ralston

Self

Grover Krantz

Self

Gerald Hawkins

Self

Robert Rines

Self

Alexander Dolgov

Self

Leonid Krinov

Self

Alexsei Vasilyevich Zolotov

Self

Nikolai Vasiliyev

Self

Leonid Alekseyevich Kulik

Self (archive footage)

Michael O'Kelly

Self

Archie Tom

Self

Aubrey Burl

Self

Charles Knight

Self

Sylvia Mowday

Self

Butch Hottinger

Self

Robert Nathan

Self

N.K. Vereshchagin

Self

Roy Mackal

Self

Don Albert

Self

Henry C. Courten

Self

Peter Boyce

Self

Jack Hartung

Self

Dwight Carey

Self

Myra Shackley

Self

James Tuck

Self

Bernard Heuvelmans

Self

Charles Flynn

Director

Michael Weigall

Director

Peter Jones

Director