Jim Lovell as Narrator - Apollo 8, Apollo 13 (voice)

Russell Schweickart as Narrator - Apollo 9 (voice)

Eugene Cernan as Narrator - Apollo 10, Apollo 17 (voice)

Michael Collins as Narrator - Apollo 11 (voice)

Charles Conrad as Narrator - Apollo 12 (voice)

Richard Gordon as Narrator - Apollo 12 (voice)

Alan Bean as Narrator - Apollo 12 (voice)

Jack Swigert as Narrator - Apollo 13 (voice)

Stuart Roosa as Narrator - Apollo 14 (voice)

James Irwin as Narrator - Apollo 15 (voice)

Ken Mattingly as Narrator - Apollo 16 (voice)

Charlie Duke as Narrator - Apollo 16 (voice)

Harrison Schmitt as Narrator - Apollo 17 (voice)

Buzz Aldrin as Self (archive footage)

Bill Anders as Self (archive footage)

Neil Armstrong as Self (archive footage)

Stephen Bales as Self (archive footage)

Walter Cunningham as Self (archive footage)

Ron Evans as Self (archive footage)

Fred Haise as Self (archive footage)

Neil B. Hutchinson as Self (archive footage)

Christopher Kraft as Self (archive footage)

Gene Kranz as Self (archive footage)

Jim McDivitt as Self (archive footage)

Edgar D. Mitchell as Self (archive footage)

Bob Overmyer as Self (archive footage)

Buck Owens as Self (voice) (archive audio)

Wally Schirra as Self (archive footage)

Dave Scott as Self (archive footage)

Alan Shepard as Self (archive footage)

Deke Slayton as Self (archive footage)

Thomas Stafford as Self (archive footage)

Edward H. White II as Self (archive footage)

John Young as Self (archive footage)

John F. Kennedy as Self (archive footage)

Lyndon B. Johnson as Self (archive footage)

Joseph P. (Joe) Kerwin as Self - Capsule Communicator (voice)