So I've read a few articles and seen a few videos on the so called "planet-X". There's a video currently circulating on you-tube (currently in the most viewed section, for what that's worth) with supposed cover-up footage from the south pole telescope, clearly depicting the planet - all very conspiracy laden, but with a good number of people entertaining the idea that a major disaster is going to happen. So my question is what do you knowledgable astronomers out there think of such claims? I am by no means one of you (to do sufficent research to have an informed opinion would take up a vast amount of my time and effort) - so I would like some opinions. I couldn't find a "science fiction" section of the forum - so this thread may sit uncomfortably with real subjects - sorry if that is the case. EDIT - I've just seen the "skeptisism and Debunking" section. Mods - please move.