In case you haven’t heard of “Planet X,” it’s a notorious piece on Paleobabble that was derived from Zecharia Sitchin’s 12th planet Nibiru nonsense. However, Planet X has since taken on a (fake) life of its own, so that the idea cannot be equated with Sitchin’s ancient astronaut fairy tales. It’s since been married to the Mayan 2012 buffoonery and other conspiracy thinking about astronomy.

I’d encourage all readers to check out the Pseudo-Astronomy podcast for its series (now five parts) on “The Fake Story of Planet X.”  Good stuff.