Seasons
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Cast
- Neil deGrasse Tyson as Self - Host
- Seth MacFarlane as President Harry S. Truman
- Seth MacFarlane as Sherwood Rowland
- Sasha Sagan as Rachel Molly Gruber
- Trang Vo as Birthmark Child
- Trang Vo as Birthmark Teen
- Trang Vo as Birthmark Woman
- Elizardo Torrez as Young Carl Sagan
- Shereen Balles as Female Voyager
- Viggo Mortensen as Nikolai Vavilov
- Patrick Stewart as William Herschel
- Marcelo Tubert as Self
- Adam Tsekhman as Christiaan Huygens