理查德·林特恩

Richard Lintern

饰：自己

麦克·罗维

Mike Rowe

饰：自己

Jocelyn Bell Burnell

饰：(archive footage) (as Jocelyn Bell)

Hakeem Oluseyi

饰：Self - Astrophysicist

James S. Bullock

饰：(as James Bullock)

Alex Filippenko

饰：Self - Astrophysicis

Phil Plait

饰：Self - Astronomer

Michelle Thaller

饰：Self - Astronomer