![View Poster Image](https://image.tmdb.org/t/p/w342/fRqLfDnoTdvGCb7PB8igOO737X3.jpg)
![](https://image.tmdb.org/t/p/w92/rkNnugOmkMD1sXPCSQK1UZFAoWE.jpg)
Mike Rowe
Narrator (39 eps)
Erik Dellums
Himself - Narrator (25 eps)
![](https://image.tmdb.org/t/p/w92/ezKx8OPcgvJkPJWGJ4c5wUGjfVv.jpg)
Lawrence Krauss
Himself (6 eps)
![](https://image.tmdb.org/t/p/w92/brVv7KevXyEraj4vhcNySAc8myb.jpg)
Michio Kaku
Himself (6 eps)
![](https://image.tmdb.org/t/p/w92/82pGry45qjmchdSlLp8z173xMx4.jpg)
Michelle Thaller
Herself (6 eps)
![](https://image.tmdb.org/t/p/w92/4d16FHoMNw1GOv89W6s7dxSEpuz.jpg)
Phil Plait
Himself (6 eps)
![](https://image.tmdb.org/t/p/w92/d6jZbDseFCdkQhLbKck8RjqPMck.jpg)
Albert Einstein
Himself (Archive footage) (5 eps)
![](https://image.tmdb.org/t/p/w92/qYfmDezPYguD45T3fKulyB8tHUv.jpg)
Richard Lintern
Himself - Narrator (1 eps)