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When the Robinsons nearly reach Alpha Centauri, they find a human base run by young people. They convince the adults that Penny and Will aren't their children and they leave in the Jupiter 2.
Did You Know?
A picture of the Beatles (Sgt Pepper period) can be seen on the wall in this episode. In the Lost in Space time frame, this episode would have taken place in the year 2000, thirty years after they broke up. Clearly the effects of the sixties counter culture can been seen in the Promised Planet. The Beatles picture is on the left wall at 28:01 to 30:44. See more
We just don't groove to the same vibrations.