(In his pitch to NBC in the 1960s, Gene Rodenberry said, "Okay, so this is my pitch: All of the characters are on a ship that travels through space, a "space" ship, if you like. Exotic locations like Adventure Towns or the Planet of Hats are just a "hyperjump" away. It's kind of like a Wagon Train to the Stars."
I must have missed the "Planet of Hats" episode.)