Lost in Space "is a science fiction television program created and produced by Irwin Allen, produced by 20th Century Fox and broadcasted by CBS. The program aired for three seasons, with 83 episodes aired between 1965 and March 6, 1968. The first season was filmed on black and white film, while the rest were in color. In 1998, a movie based on this series was released. The series mainly focuses on Jonathan Harris playing Dr. Zachary Smith, who was initially a completely evil potential killer. As the first season progresses, he becomes a cowardly character, providing comedic relief (and causing most of the problems) for the show.