Season 3 was when TOS started to go all to hell. All of the very worst episodes were in Season 3. It was almost a relief when it was cancelled. Season 3 starte

Season 3 was when TOS started to go all to hell. All of the very worst episodes were in Season 3. It was almost a relief when it was cancelled. Season 3 started right after the Apollo 11 moon landing, when people had got a hint of how difficult and terrifying space travel really was. Aliens with bumpy heads weren't inspiring anymore.