Πρωταγωνιστές του κύκλου 1

1. 

   Will Smith

   Self - Host

Γκεστ σταρ 13

1. Hazel Barton

   Self - Microbiologist

2. Federico Pisani

   Self - Biologist

3. Lee Koon Yau

   Self - Engineer

4. Liane Benning

   Self - Biogeochemist

5. Kenny Broad

   Self - Environmental Anthropologist

6. 

   Nicole Stott

   Self - Astronaut

7. 

   Chris Hadfield

   Self - Astronaut

8. 

   Michael J. Massimino

   Self - Astronaut

9. Jerry Linenger

   Self - Astronaut

10. 

    Mae Jemison

    Self - Astronaut

11. 

    Jeffrey A. Hoffman

    Self - Astronaut

12. Leland Melvin

    Self - Astronaut

13. Jaime Awe

    Self - Archeologist

Συντελεστές 4