Is there a planet or brown dwarf star called Nibiru or Planet X or Eris that is approaching the Earth and threatening our planet with widespread destruction?
There is no factual basis for these claims, says the NASA website: “Nibiru and other stories about wayward planets are an Internet hoax.” The story of the stray planets may have started with claims that a wandering planet discovered by the ancient Sumerians is headed toward Earth.
According to NASA: “This catastrophe was initially predicted for May 2003, but when nothing happened, the doomsday date was moved forward to December 2012. Then these two fables were linked to the end of one of the cycles in the ancient Mayan calendar at the winter solstice in 2012 -- hence the predicted doomsday date of December 21, 2012.
“If Nibiru or Planet X were real and headed for an encounter with the Earth in 2012, astronomers would have been tracking it for at least the past decade, and it would be visible by now to the naked eye. Obviously, it does not exist.”
On the other hand, Eris is real, but it is a dwarf planet similar to Pluto that will remain in the outer solar system; the closest it can come to Earth is about 4 billion miles.”