Lost in Space are to be cryogenically frozen for the voyage, and they are set to be unfrozen when the spacecraft approaches its destination. Meanwhile, Dr. Zachary Smith (Jonathan Harris), Alpha Control's doctor, is revealed to be a saboteur on behalf of an unnamed nation. After disposing of a guard who catches him on board the spacecraft, Smith reprograms the "Jupiter 2"s B-9 environmental control robot (voiced by Dick Tufeld) to destroy critical systems on the spaceship eight hours after launch. Smith, however, becomes trapped aboard at launch and his extra weight throws the "Jupiter 2" off course, causing it to encounter a
Lost in Space / farce episodes of the series as fanciful entries in Penny's Space Diary. Complex adult-themed story concepts were introduced and the story included a love triangle developing between Penny, Judy and Don. The "Jupiter 2" had various interior designs in the first year. The first year had an arc ultimately leading the travelers to Alpha Centauri with Smith contacting his former alien masters along the way. Aeolis 14 Umbra were furious with Smith for not having succeeded in his mission to prevent the "Jupiter 2", built with technology from a crashed ship of their race, from reaching the star system