This documentary, the final film directed by Frank Capra, explores America's plans for the future of space exploration. It was produced by the Martin-Marietta Corporation for exhibition in the Hall of Science at the 1964 New York World's Fair.
| Actor | Role |
|---|---|
 Danny ThomasInterviewer / Narrator (voice) | Interviewer / Narrator (voice) |
 Mel BlancChinese Magician / Astronaut / Carrot (voice) | Chinese Magician / Astronaut / Carrot (voice) |
 Jim BackusMoon (voice) | Moon (voice) |
 Paul FreesMr. Space / Astronaut (voice) | Mr. Space / Astronaut (voice) |
 Marcia McBroomPedestrian | Pedestrian |
 June ForayFlowers (voice) | Flowers (voice) |
 Charles LaneInterviewee | Interviewee |
 Alan ReedInterviewee | Interviewee |
 Sid MeltonCab Driver | Cab Driver |
 Doodles WeaverInterviewee | Interviewee |
 John LitelPriest | Priest |