Conversation so far:
when was star trek the motion picture released
Star Trek The Motion Picture was released on December 7, 1979.
what were the ticket sales for star trek the motion picture
Star Trek The Motion Picture earned $139 million worldwide.
how much did star trek the motion picture movie cost to make
Star Trek The Motion Picture's budget was $46 million.

Question: who directed the movie
Self-contained rewrite: who directed star trek the motion picture