奈吉尔·巴伯

Nigel Barber

比尔·克林顿

Bill Clinton

饰：Self - President of the US,(archive footage)

Nagin Cox

饰：Self - Spacecraft Engineer NASA

James Garvin

饰：Self - Chief Scientist NASA Goddard,(as James B. Garvin)

John M. Grunsfeld

饰：Self - Astronaut & Astrophysicist

埃隆·马斯克

Elon Musk

饰：Self,(archive footage)

Jay Piatek

饰：Self - Meteorite Collector

Adam Steltzner

饰：Self - Chief Engineer NASA Mars 2020

Amy Shira Teitel

饰：Self - Spaceflight Historian

John Casani

饰：Self - Engineer Mariner 4

加来道雄

Michio Kaku

饰：Self - Theoretical Physicist

Dawn Sumner

饰：Self - Astrobiologist