"The Ghost Planet"


LiS episode
2x03 / 32nd of 83 aired
Production #
First aired
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Last week, as you recall, we left the Jupiter 2 hurtling through the void of outer space. Little did our contended space pioneers realize that somewhere, out in the blackness, an incredible ghost planet was, even now, seeking to lure them into it's sinister clutches...


A voice claiming to be from Earth instructs Dr. Smith to land the Jupiter 2 on the planet it is passing. When Smith obeys, the Robinsons find a civilization of robots who make humans their slaves.

Background InformationEdit

  • This is the first soft-landing made by the Jupiter 2 on a planet. The film shots of the landing are subsequently reused, with the same painted pattern on the hard (asphalt) surface, with the same yellow circled painted on the landing surface, when the ship lands on other planets in the same manner, such as in Michigan, 1947, in Visit to a Hostile Planet, and in The Promised Planet. The Jupiter 2 also made a soft landing gear down landing in "The Great Vegetable Rebellion".
  • Near the end of Wild Adventure, John told Alpha Control that they did not have the fuel to alter course to reach Earth. However, in this episode, Smith is able to fire thrusters to alter course as the Space Controller requested.
  • The Robot's model number is revealed to be B-9 in this episode. However, in The Colonists he informs Noble Niolani his class is M-3.
  • Neither the Jupiter 2's landing or take-off scrambles the electrical system on the planet as it will in Visit to a Hostile Planet.
  • At the end of the episode, as the characters fight their way back to the Jupiter 2, you can hear Bob May's voice saying The Robot's dialogue. Dick Tufeld's voice was not dubbed over.
  • The assembly line on which Dr. Smith is forced to work deposits its completed circuit boards in what appears to be ordinary luggage.
  • The robots on the planet are all cut from different cloth. The space controller robot is clearly a machine but the drones with the golden dome faces are humanoid in appearance. The giant hairy brain that rules them all might even be organic. Irwin Allen's preference for raiding his existing prop and costume supplies in order to save money was probably the reason for these choices.
  • Doctor Smith gives all the Jupiter 2's weapons to the alien robot, except for the reserve weapons that Don and John use later in the episode. And are the weapons ever returned? I think not! So the Robinsons are out of laser guns.
  • The weapon that is moved out of the building to fire upon the Jupiter 2 to prevent it's departure is the same machine that was at the alien relay station in A Change Of Space. Now with a gun added.

Links and referencesEdit



Special guest starEdit

Uncredited co-stars (alphabetical)Edit


automated planet; Capri; chicken; guitar; memory bank; ration; Santa Lucia

External linkEdit

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