Cast 14

1. 

   David Attenborough

   Self - Narrator (archive sound)

2. 

   Sean Carroll

   Self - Narrator (archive sound)

3. 

   Craig Childs

   Self - Narrator (archive sound)

4. 

   Brian Cox

   Self - Narrator (archive sound)

5. 

   Alex Filippenko

   Self - Narrator (archive sound)

6. 

   Stephen Hawking

   Self - Narrator (archive sound)

7. 

   Michio Kaku

   Self - Narrator (archive sound)

8. 

   Lawrence Krauss

   Self - Narrator (archive sound)

9. 

   Janna Levin

   Self - Narrator (archive sound)

10. 

    Phil Plait

    Self - Narrator (archive sound)

11. 

    Martin Rees

    Self - Narrator (archive sound)

12. 

    Michelle Thaller

    Self - Narrator (archive sound)

13. 

    Neil deGrasse Tyson

    Self - Narrator (archive sound)

14. 

    Mike Rowe

    Self - Narrator (archive sound)

Crew 4