Robert A. Heinlein is typically considered one of the grand masters of the so-called "Golden Age of Science Fiction," that period just before World War II when the genre began to take itself seriously as literature. The Golden Age writers were typically hard nosed about realistic science within the boundaries of what was then known.
Heinlein In Hollywood part 3: Closing the Loop
Finishing up my survey of films based on Robert Heinlein with a look at this year's Predestination, the best film (so far) ever made from the writer's work. This is part of the Film Preservation Blogathon, so your pledges for these posts will go to restore the silent film, Cupid in Quarantine, a recently rediscovered "lost film" from 1918.