Overview
The Robot suddenly announces that the Jupiter II is approaching Alpha Centauri. Everyone is suprised, and the ship lands on a planet, where they are greeted by a group of people who appear to be teenagers from Earth. It turns out that they are aliens who live like Earth-style hippies, and they are incapable of growing old. They want to age normally, and to do this they want to get the older members of the Robinson party to leave in the Jupiter II while the younger members can stay behind and be used in an experiment that will make it possible for them to do so. The aliens trick the older members of the Robinson party into leaving, but Will pulls a fast one on the aliens and the Jupiter II eventually returns to the planet, and Penny, Will, and Dr. Smith, who somehow passed himself off as a young person, are rescued.
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3 - 1Condemned of Space September 06, 1967 -
3 - 2Visit to a Hostile Planet September 13, 1967 -
3 - 3Kidnapped in Space September 09, 1967 -
3 - 4Hunter's Moon September 27, 1967 -
3 - 5The Space Primevals October 04, 1967 -
3 - 6Space Destructors October 11, 1967 -
3 - 7The Haunted Lighthouse October 18, 1967 -
3 - 8Flight into the Future October 25, 1967 -
3 - 9Collision of Planets November 08, 1967 -
3 - 10Space Creature November 15, 1967 -
3 - 11Deadliest of the Species November 22, 1967 -
3 - 12A Day at the Zoo November 29, 1967 -
3 - 13Two Weeks in Space December 13, 1967 -
3 - 14Castles in Space December 20, 1967 -
3 - 15The Anti-Matter Man December 27, 1967 -
3 - 16Target: Earth January 03, 1968 -
3 - 17Princess of Space January 10, 1968 -
3 - 18Time Merchant January 17, 1968 -
3 - 19The Promised Planet January 24, 1968 -
3 - 20Fugitives in Space January 31, 1968 -
3 - 21Space Beauty February 14, 1968 -
3 - 22The Flaming Planet February 21, 1968 -
3 - 23The Great Vegetable Rebellion February 28, 1968 -
3 - 24Junkyard in Space March 06, 1968