The original pilot episode, which never aired, did not feature either the robot or Dr. Smith (who was added later by 20th Century Fox as an antagonist). Much of the original footage was re-used in the first four televised episodes. Written by
Did You Know?
In the first pilot the Robinson ship is called Gemini 12. This was changed to Jupiter 2 for the rest of the series. See more
John and Don visit the meteorological station bundled in parkas and talk about the cold dropping to -150 degrees by the morning, but they are clearly sweating in all their close-ups. Meanwhile, everyone else is at base camp in shirt sleeves, including Will who joins up with the men. See more