Acting
2025 · (himself)
2024 · Carl Sagan (voice) (archive sound) (uncredited)
2024 · Self
2023 · Self (archive footage)
2018 · Self (archive footage)
2014 · Voice
2012 · Self
2012 · Carl Sagan
1997 · Self (archive footage)
1996
1990 · Self
1989 · Guest
1988 · Self
1987 · Self - Moderator
1984 · Self
1980 · Self
1977 · Self
1975 · Himself
1973 · Himself
1969 · Narrator
· Himself
2020
2014 · Self (voice) (archive footage)
2014 · Himself (archive footage)
1980 · Self - Host
1975 · Self - Cosmos (archive footage)
1974
1967 · Self
1962 · Self
