In Episode 6 of Season 5 of Castle ('Final Frontier'), there is a murder, wherein the body is placed inside a fake spaceship designed for the 'Nebula 9 Fan Experience'. I Googled Nebula 9 and all results are abc.com or Memes released by it.
I'm pretty convinced that it's made-up, but just wanted to confirm it is. And if it is made-up, was it inspired by some long-forgotten failed Sci-Fi show? If yes, which one?!