Visitors From Beyond the Stars - S1-E18
Factual error: The aliens show Doug and Tony the planet they plan to invade - Earth, of course. But the special effects department forgot to give poor old Earth any clouds. (There are clouds over more than 70% of our planet at any given time.) When they go down to the surface, though, there are plenty of clouds in the sky. (00:05:20)
Visitors From Beyond the Stars - S1-E18
Factual error: Modern power cables are seen near Crawford's homestead, complete with aircraft warning flags draped over them. These cannot be mistaken for 19th century telegraph wires.
