출연진
Terry MacDonald
Narrator (voice)
존 F. 케네디
Self - President of the United States (archive footage)
Jim Lovell
Self - Captain, NASA Astronaut
Shannon Lucid
Self - NASA Astronaut
유리 가가린
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)