ReacTor doesn't seem to want to let me post a comment, so I'm sticking it here...
Ovenden hardly originated the missing planet 5 idea; it goes back to Kepler's16th-century statement, "Between Mars and Jupiter, I put a planet," an idea which was taken up in Bode's Law nearly two centuries later.
Any writer who has used wormholes as a way of getting around the Universe is most likely in this club; they have repeatedly been shown to be too small and too unstable for the purpose. (I'm looking at you, Forever War.)
There are also writers who use theories that they know to be disproven long before they wrote. My favorite example of this is the late Howard Waldrop's lovely story "...As We Know't," in which an intrepid scientist of the 19th Century sets out to isolate phlogiston and succeeds all too well...
no subject