Hirogen Alpha wrote:
The films of 2001: A Space Odyssey and 2010: The Year We Make Contact might qualify, but that depends upon your interpretation of the Monolith, the Star Child, and such.
Silent Running perhaps?
I'm less looking for films than I am looking for tv series.
Though now that you mention it I would put Apollo 13 and the first 2 "Alien" movies into the category of movies without supernatural elements.