Guest Stars Janna Levin as Herself (Theoretical Physicist) Max Tegmark as Himself (Theoretical Physicist) David Spergel as Himself (Theoretical Physicist) Alan Guth as Himself (Theoretical Physicist) Sean Carroll as Himself (Cosmologist) Tara Shears as Herself (Particle Physicist) Mike Lisa as Himself (Particle Physicist) Joe Incandela as Himself (Particle Physicist)
