- David Brin . . . (1950 – ), American-born astrophysicist; award-winning sci-fi author. Wrote the post-apocalyptic sci-fi novel The Postman, made into a 1997 Hollywood movie starring Kevin Costner. IMDb
- Brian Greene . . . (1950 – ), American-born theoretical physicist. Has writing, producing, and acting credits on IMDb
- Stephen Hawking . . . (1950 – ), British-born theoretical physicist and cosmologist. Has acting credits on IMDb
- Sir Fred Hoyle . . . (1915 – 2001), British-born astronomer and physicist; coined the term "Big Bang"; sci-fi author. Co-created and co-wrote a 1961 sci-fi TV series in the United Kingdom, A for Andromeda, starring Julie Christie, later made into a 2006 film. IMDb
- Vladimir Nabokov . . . (1899 – 1977), Russian-born entomologist (insect researcher), lepidopterist (butterfly researcher), butterfly evolutionary theorist, curator of lepidoptera at the Museum of Comparative Zoology at Harvard University; author in various genres. Wrote the novel Lolita, made into Hollywood movies in 1962 and 1997. IMDb
- Bill Nye . . . (1950 – ), American-born scientist-educator; Bachelor of Science degree in mechanical engineering; Executive Director of The Planetary Society; a fellow of the Committee for Skeptical Inquiry. Has acting credits on IMDb
- Carl Sagan . . . (1934 – 1996), American-born astronomer, astrophysicist, astrobiologist, cosmologist; co-founder of The Planetary Society; co-founder of the Committee for Scientific Investigation of Claims of the Paranormal (CSICOP, now known as the Committee for Skeptical Inquiry); award-winning sci-fi author. Wrote only one novel, Contact, originally written by Sagan as a screenplay, then converted into a novel and subsequently made into a 1997 Hollywood sci-fi movie starring Jodie Foster and Matthew McConaughey. IMDb
- Sir Charles Percy Snow (C.P. Snow) . . . (1905 – 1980), British-born physicist, chemist. His detective-style novel series Strangers and Brothers was made into a 1984 TV series in the United Kingdom. IMDb
- Neil deGrasse Tyson . . . (1950 – ), American-born astrophysicist; planetarium director; a fellow of the Committee for Skeptical Inquiry. Has acting credits on IMDb
- Jack Weyland . . . (1940 – ), American-born physicist, professor of physics; author in various genres. Wrote the novel Charly, made into a 2002 Hollywood movie. IMDb
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