Lost in Space as a happy crew without internal conflicts. While many storylines in the later series focused primarily on Dr. Zachary Smith, a stowaway and saboteur played by Jonathan Harris, he was absent from the unaired pilot. His character was added after the series was commissioned for production. The pilot episode was first aired on television during a 1997 retrospective. CBS bought the series, turning down "Star Trek" in favor of "Lost in Space". Before the first episode was filmed, the characters Smith and the Robot were added, and the spaceship, originally named "Gemini 12", was renamed the "Jupiter 2" and redesigned.
Lost in Space they spend the rest of the season and survive a host of adventures. Smith remains with the crew and acts as a source of comedic cowardice and villainy, exploiting the eternally forgiving nature of Professor Robinson. At the start of the second season the repaired "Jupiter 2" launches into space once more, to escape the destruction of Priplanus following a series of cataclysmic earthquakes. The Robinsons crash-land on a strange new world, to become planet-bound again for another season. In the third season, a format change was introduced. In this season, The "Jupiter 2" travels freely in space, visiting a