Dave Hoffman
— Narrator
Todd Barber
— Himself - Propulsion Engineer, NASA-JPL
Jeanne Cavelos
— Herself
Cynthia Breazeal
— Herself
Michael Dennin
— Himself
John Goodson
— Himself
Kurt Liewer
— Himself
James Fallon
— Himself
Campbell Aird
— Himself
Jay Martin
— Himself
Rob Coleman
— Himself
Wytze Van Der Veer
— Himself
Lorne Peterson
— Himself