埃里克·德拉姆斯

Erik Dellums

饰：(as Erik Todd Dellums)

Michelle Thaller

饰：Self - Astronomer

加来道雄

Michio Kaku

饰：(as Dr Michio Kaku)

Alex Filippenko

饰：Self - Astrophysicist

理查德·林特恩

Richard Lintern

饰：Self - Narrator

Lawrence Krauss

Lawrence Krauss

饰：(as Lawrence M Krauss)

Hakeem Oluseyi

饰：Self - Astrophysicist

Phil Plait

饰：Self - Astronomer