The Nibiru cataclysm is a proposed disastrous encounter between the Earth and a large planetary object referred to as Planet X, Nibiru, or Hercolubus. Either this object would collide with the Earth or pass so close to it that it would cause the Earth's poles to shift. The idea was first put forward in 1995 by Nancy Lieder, founder of the website ZetaTalk.
Since 2012, the Nibiru cataclysm has frequently reappeared in media, usually linked to popular astronomical objects such as Comet ISON. Although the name "Nibiru" is derived from the works of the Russian author Zecharia Sitchin and his interpretations of Babylonian and Sumerian mythology, he denied any connection between his work and claims of a coming apocalypse.
Many people believe that Nibiru is real and is even referenced in the Bible, in verses such as Revelation 8:10-11, 12:1-17, etc.