Planet X--December 21, 2012--Mayan Prophecy--Annunaki--etc.?

I have carefully reviewed the "evidence" for all of this, as a professional anthropologist and an experienced amateur astronomer with a degree in physics, and absolutely NONE of it makes any scientific sense or has any scientific validity. It's all wild speculation, promoted by the authors of trashy books and TV specials, with no backing from any legitimate scientists.