| VVéronique PréaultSelf - Narrator (voice) | Self - Narrator (voice) |
| XXavier PascoSelf - Political Scientist | Self - Political Scientist |
| JJohn LogsdonSelf - Political Scientist | Self - Political Scientist |
 Alain CirouSelf - Journalist | Self - Journalist |
| LLiu JizhongSelf - CNSA Member | Self - CNSA Member |
| IIsabelle Sourbès-VergerSelf - Geographer | Self - Geographer |
| YYang LiweiSelf - Taikonaut | Self - Taikonaut |
| TTian YulongSelf - CNSA Member | Self - CNSA Member |
| WWu JiSelf - Scientist | Self - Scientist |
| JJan WörnerSelf - ESA Director | Self - ESA Director |
| SSamantha CristoforettiSelf - Astronaut | Self - Astronaut |
| HHervé SteveninSelf - ESA Member | Self - ESA Member |
| KKathrin NowakSelf - ESA Member | Self - ESA Member |
| JJames L. GreenSelf - NASA Member | Self - NASA Member |
| EEric StallmerSelf - CSF President | Self - CSF President |
| JJohn ThorntonSelf - Astrobotic President | Self - Astrobotic President |
| ÉÉtienne SchneiderSelf - Politician | Self - Politician |
| KKyle AciernoSelf - iSpace Europe Director | Self - iSpace Europe Director |
| KKai-Uwe SchroglSelf - ESA Member | Self - ESA Member |
| OOliver JuckenhöfelSelf - ASS Member | Self - ASS Member |
| DDamien CochereauSelf (voice) | Self (voice) |
 Bruno MagneSelf (voice) | Self (voice) |
| AAnne MassoteauSelf (voice) | Self (voice) |
| CCyril MazzotiSelf (voice) | Self (voice) |
| EEugene CernanSelf - Astronaut (archive footage) | Self - Astronaut (archive footage) |
| HHarrison SchmittSelf - Astronaut (archive footage) | Self - Astronaut (archive footage) |
 Yuri GagarinSelf - Cosmonaut (archive footage) | Self - Cosmonaut (archive footage) |
 Nikita KhrushchevSelf - Politician (archive footage) | Self - Politician (archive footage) |
 John F. KennedySelf - Politician (archive footage) | Self - Politician (archive footage) |
 Donald TrumpSelf - Politician (archive footage) | Self - Politician (archive footage) |
