| 角色 | 饰演者 | 角色介绍 |
| Neil Armstrong | 丹尼尔·莱派恩 | |
| Buzz Aldrin | 詹姆斯·马斯特斯 | |
| Michael Collins | 安德鲁·林肯 | |
| Deke Slayton | Nigel Whitmey | |
| Psychologist | 威廉·霍普 | |
| Janet Armstrong | 安娜·麦克西维尔·马丁 | |
| Alan Shepard | 特莱沃·怀特 | |
| Pat Collins | Kosha Engler | |
| Technician #1 | Richard Gibbons | |
| Technician #2 | Gene Emmer | |
| Gene Aldrin | Michael J. Reynolds | |
| Marion Aldrin | Egler Dudenas | |
| Joan Aldrin | Kelli Kerslake | |
| Rick Armstrong | Callum Marullo | |
| Female Neighbour | Ana Goldberg | |
| Pat White (as Gabija Ryskuviene) | Gabija Jaraminaite | |
| Bill Anders | Ian Porter | |
| Faye Stafford | Jennifer Woodward | |
| Frank Borman | Martin McDougall | |
| Susan Borman | Heidi Gibbons | |
| Tom Stafford | Richard Dillane | |
| Valerie Anders | Else Gudaviciute | |
| Marilyn Lovell | Ursula Burton | |
| Reporter #1 | Nathan Nolan | |
| Reporter | Thomas Wilbur | |
| Reporter | Rosalynd Litchfield | |
| Reporter | Aras Zirgulis | |
| Chris Kraft | Colin Stinton | |
| Bob Gilruth | Patrick Poletti | |
| Mission Control Reader | Eben Young | |
| Himself (uncredited) | 巴兹·奥德林 | |
| Himself (voice) (archive sound) (uncredited) | Neil Armstrong |
