The movie Argo depicts the extraction of six embassy workers who were hiding in Iran during the hostage crisis that began in 1979. To get their expert into the country and to rescue the hiding embassy workers, the CIA created a ruse that the expert was working on a science fiction movie named "Argo" and scouting locations in Iran that might be used for filming. To make their story more believable, the CIA used a script that Hollywood had rejected.
Something that has always puzzled me is how did the unmade/fake movie get the name "Argo"? The novel on which it was to be based is called "Lord of Light" by Roger Zelazny. If the space ship in it had been named "Argo", that would have made sense. However, the name was "Star of India". Furthermore, the name "Argo" references Greek mythology, while the mythology in the book is Hindu and Buddhist. Thus the name "Argo" doesn't fit. How did the name come about?