Linked to the close of the Mayan calendar, a variety of rumors have spread regarding ways the world could end in 2012. One popular contender is Nibiru, a supposed planet that some claim will collide with Earth at the end of the year. But despite the buzz, there is no scientific evidence supporting the alleged planet’s existence.
Nibiru has been linked to NASA by various bloggers, and is also sometimes referred to or confused with Planet X, another supposed world for which there is no evidence.