Neil deGrasse Tyson
Self - Host
"Cosmos: A Spacetime Odyssey" returns for a second season. Ann Druyan, original creative collaborator to Carl Sagan, serves as executive producer.
Self - Host
President Harry S. Truman / Executive Producer
Rachel Molly Gruber
Birthmark Child
Young Carl Sagan
Female Voyager
Nikolai Vavilov
William Herschel
Self
Christiaan Huygens
Thomas Young
Charles Darwin
Monk
Robert Oppenheimer
Governess
Young Father / Producer
Ashoka
Self
Neil Armstrong
John Herschel
