The term "Nibiru" are from the Sumerian stone tablets written in cuneiform. These tablets are roughly 6,000 years old. The word Nibiru means "Planet of the crossing". The Sumerian ancient culture is the first civilization on earth that we have history on.
It is located in today's Iraq. It has been known throughout time as Sumer, it is also known as Mesopotamia, and Babylon, all the same place for where earth's initial culture has been developed.
There are several theories on Planet X or Nibiru. Some say this has been discussed by Nostradamus. In the Mabus Quatrain (Century II, Quatrain 62)
Century II, Quatrain 62
Mabus then will soon die, there will come
Of people and beasts a horrible rout:
Then suddenly one will see vengeance,
Hundred, hand, thirst, hunger when the comet will run.
Some say that Planet X is due to arrive shortly, and the coming of Nibiru is a major sign that the end is near. When NASA discovered Sedna many people feel that this is in effect Planet X. We have created a forum for people to discuss this breaking news.