The Robinson family were quite a bunch of Jonahs really, I mean they landed n 4 planets in the show's total run time and every planet blew up after they left.
Major West wasn't a dab hand at landing either, as thet managed to crash 4 times in a row. Did anyone check his pilot's licence at all before they left??
Just before the crash landed on the forth planet, an alien civilised world warned them off and fired missiles at them, obviously knowing that their world would be doomed should the Robinsons manage to land there.
The J2 crash landed on another world in that star system, was repaired and took off again. The planet duly exploded just after they left!!
Ironically Replicators appeared on Lost In Space before TOS and were at the level of Replicators in TNG, as they were used in one episode to fabricate parts.
I was always sure that the writers were on Acid or something.