Matthew Jayson Cwern(voice)
Alan Shearman(voice)
Natasha Goubskaya(voice)
Марсело Туберт(voice)
Мара Жуно(voice)
Рик Паскуалоне(voice)
Элайджа Браик(voice)
Novi Brown(voice)
Jamie Hanes
Will GreenburgJohn Goodricke
Steve OatwayCharles Darwin
Adam TsekhmanChristiaan Huygens
Нил АрноутNeil Armstrong
Ernie VigilThomas Young
Джадд ХиршRobert Oppenheimer (voice)
Оливия Д'АбоMarie Curie (voice)
Joseph J. MicucciYoung Father
Lennard OrtmannAlbert Einstein
Alex BartramSamuel Sagan
Brannon BragaWorld's Fair Attendee
Marcello GuedesYoung Neil deGrasse Tyson
Leandro GuedesYoung Stephen Joseph Tyson