Terry MacDonald

Narrator (voice)

John F. Kennedy

Self - President of the United States (archive footage)

Jim Lovell

Self - Captain, NASA Astronaut

Shannon Lucid

Self - NASA Astronaut

Yuri Gagarin

Self - Soviet Cosmonaut (archive footage)

Alan Shepard

Self - NASA Astronaut (archive footage)

Gus Grissom

Self - NASA Astronaut (archive footage)

German Titov

Self - Soviet Cosmonaut (archive footage)

Roger K. Crouch

Self - NASA Astronaut

John Glenn

Self - NASA Astronaut (archive footage)