There's a bunch of things that could end the world, anytime. It's just pure luck we haven't been annihilated already. Earth crushing asteroids, gamma ray burst, solar flares. They're all possibilities. No unusual astronomical anomaly is taking place unless you count the alignment of our solar system with the center of the galaxy. I don't see any possibility of earth ending though.
Ok, so what the Mayans really predicted was that the Earth will eventually come closer, and closer to the sun by the rotation of the planets, and when it comes close enough to the Sun, then we'l basicly gonna become French fries.
Maybe the Mayans just got lazy and stopped at 2012 *shrugs* Or thats when the Spaniards came and killed them *shrugs again* I dont think anything is going to happen
Ive read some of these posts, and I think some idea are crazy. I have no believe that the world will really end in 2012. Note that I have no problems if you dont believe me.