 FACT: SPOILER: In this episode, a hillbilly woman (Agnes Moorehead)  encounters a tiny spacecraft, about a yard across, piloted by tiny  beings only a few inches high, who turn out to be humans from the  planet Earth, in one of those sudden climactic "reversals of  perspective" that Rod Serling was so fond of. Moorehead is one of a  race of giants (by comparison to Earthlings). In fact, for a bipedal  creature the size of Moorehead to be proportioned just like us, her  planet would have to be very small or made up of extremely light  constituents so that gravity would be low, roughly the same as the  Moons gravity. A planet that size would not have enough gravity to  hold any kind of atmosphere or watery oceans.