Posted March 03, 2019

Hints:
-1950s
-Famous American Director that Named Names during the McCarthy witch hunt.
-1st Feature for the Lead Actor (an oscar-worthy performance wildly unlike the parts he's known for)
-Lead Character is based on several real-life personalities
-Is on the National Film Registry in the Library of Congress

And... this one represents an early attempt at alien invasion... or was it peaceful human exploration?