The Nibiru cataclysm is a supposed disastrous encounter between Earth and a large planetary object (either a collision or a near-miss) that certain groups believed would take place in the early 21st century. Believers in this doomsday event usually refer to this object as Nibiru or Planet X. The idea was first put forward in 1995 by Nancy Lieder, founder of the website ZetaTalk. Lieder claims she is a contactee with the ability to receive messages from extraterrestrials from the Zeta Reticuli star system through an implant in her brain. She states that she was chosen to warn mankind that the object would sweep through the inner Solar System in May 2003 (though that date was later postponed) causing Earth to undergo a physical pole shift that would destroy most of humanity.

The prediction has subsequently spread beyond Lieder's website and has been embraced by numerous Internet doomsday groups. In the late 2000s, it became closely associated with the 2012 phenomenon. Since 2012, the Nibiru cataclysm has frequently reappeared in the popular media, usually linked to newsmaking astronomical objects such as Comet ISON or Planet Nine. Although the name "Nibiru" is derived from the works of the "ancient astronaut" writer Zecharia Sitchin and his interpretations of Babylonian and Sumerian mythology, he denied any connection between his work and various claims of a coming apocalypse. A prediction by self-described "Christian numerologist" David Meade that the Nibiru cataclysm would occur on 23 September 2017 received extensive media coverage.

The idea that a planet-sized object will collide with or closely pass by Earth in the near future is not supported by any scientific evidence and has been rejected by astronomers and planetary scientists as pseudoscience and an Internet hoax. Such an object would have destabilised the orbits of the planets to the extent that their effects would be easily observable today. Astronomers have hypothesized many planets beyond Neptune, and though many have been disproved, there are some that remain possible, such as Planet Nine. All the current hypotheses describe planets in orbits that would keep them well beyond Neptune throughout their orbit, even when they were closest to the Sun.

History Nancy Lieder and ZetaTalk

The idea of the Nibiru encounter originated with Nancy Lieder, a Wisconsin woman who claims that as a girl she was contacted by gray extraterrestrials called Zetans, who implanted a communications device in her brain. In 1995, she founded the website ZetaTalk to disseminate her ideas. Lieder first came to public attention on Internet newsgroups during the build-up to Comet Hale–Bopp's 1997 perihelion (the closest approach to the Sun). She stated, claiming to speak as the Zetans, that: "The Hale–Bopp comet does not exist. It is a fraud, perpetrated by those who would have the teeming masses quiescent until it is too late. Hale–Bopp is nothing more than a distant star, and will draw no closer." She claimed that the Hale–Bopp story was manufactured to distract people from the imminent arrival of a large planetary object, "Planet X", which would soon pass by Earth and destroy civilization. After Hale–Bopp's perihelion revealed it as one of the brightest and longest-observed comets of the last century, Lieder removed the first two sentences of her initial statement from her site, though they can still be found in Google's archives. Her claims eventually made the New York Times.

Lieder described Planet X as roughly four times the size of Earth, and said that its closest approach would occur on May 27, 2003, resulting in Earth's rotation ceasing for exactly 5.9 terrestrial days. This would be followed by Earth's pole destabilising in a pole shift caused by magnetic attraction between Earth's core and the magnetism of the passing planet. This in turn would disrupt Earth's magnetic core and lead to subsequent displacement of Earth's crust. After the 2003 date passed without incident, Lieder said that it was merely a "white lie ... to fool the establishment". She refused to disclose the true date, saying that to do so would give those in power enough time to declare martial law and trap people in cities during the shift, leading to their deaths.

Zecharia Sitchin and Sumer

Although Lieder originally referred to the object as "Planet X", it has become deeply associated with Nibiru, a planet from the works of ancient astronaut proponent Zecharia Sitchin, particularly his book The 12th Planet. According to Sitchin's interpretation of ancient Mesopotamian religious texts, which has been shown to be based on a faulty understanding of Sumerian text,Zechariah Sitchin , Mark Pilkington, Fortean Times, August 2003. a giant planet (called Nibiru or Marduk) passes by Earth every 3,600 years, allowing its sentient inhabitants to interact with humanity. Sitchin identified these beings with the Anunnaki in Sumerian mythology and claimed that they were humanity's first gods. Lieder first made the connection between Nibiru and Planet X on her site in 1996 ("Planet X does exist, and it is the 12th Planet, one and the same").

Sitchin, who died in 2010, denied any connection between his work and Lieder's claims. In 2007, partly in response to Lieder's proclamations, Sitchin published a book, The End of Days, which set the time for the last passing of Nibiru by Earth at 556 BC, which would mean, given the object's supposed 3,600-year orbit, that it would return sometime around AD 2900. He did say that he believed that the Annunaki might return earlier by spaceship, and that the timing of their return would coincide with the shift from the astrological Age of Pisces to the Age of Aquarius, sometime between 2090 and 2370.The End of Days p. 320

Modern proponents of the Nibiru cataclysm often cite the winged sun symbol as actually representing Nibiru, whom they believe would appear like a "winged star".

2012 and the Mayan calendar

Though Lieder herself has not specified a new date for the object's return, many groups have taken up her idea and cited their own dates. One frequently cited date was December 21, 2012. This date had many apocalyptic associations, as it was the end of a cycle (bʼakʼtun) in the long count in the Maya calendar. Several writers published books connecting the encounter with 2012. Despite that date having passed, many websites still contend that Nibiru/Planet X is en route to Earth.

In 2012, Lieder claimed that U.S. President Barack Obama futilely attempted to announce the presence of Nibiru near the Sun. After 2012, she claimed that several world leaders had intended to announce the presence of Nibiru near the Sun on October 20, 2014. Two weeks after the supposed date of announcement, she claimed that it did not occur because of consternation amongst the establishment.

2017 revival

In 2017, a conspiracy theorist and self-proclaimed "Christian numerologist" named David Meade revived the Nibiru cataclysm by tying it to various passages from the Bible. Meade declared that these passages contained secret numerological codes, which revealed the exact date on which Nibiru would arrive. He also based his predictions on the geometry of the Giza Pyramids. Meade initially predicted that Nibiru would arrive in October 2017, but he later revised the date back to September 23. The specific focus of his prediction revolved around the Woman of the Apocalypse referring to a supposedly unique configuration on that date of the Sun, Moon, and planets in Virgo. He cited the solar eclipse of August 21, 2017, as a harbinger.

Meade's claims received extensive media attention. Viral fake news stories circulated across the Internet, adducing non-existent confirmations by NASA of Nibiru's existence on a course "headed straight for Earth". In reality, NASA's position is, and always has been, that Nibiru does not exist. Meade also faced criticism from fellow Christians; Ed Stetzer, writing for Christianity Today, stated that "there is no such thing as a 'Christian numerologist, and described Meade as "a made-up expert in a made-up field talking about a made-up event". Christopher M. Graney, a professor with the Vatican Observatory Foundation, noted that the supposedly unique event was, in fact, quite common, having occurred four times in the last millennium. His September 23 theories were also debunked by Time writer Jeff Kluger. Brazilian astronomer Duília de Mello called his predictions and conjectures rubbish, and also said Nibiru would have been seen during the eclipse and that Meade was using calculations based on the Gregorian calendar.

After his predictions failed to come true, Meade revised them and declared that Nibiru would arrive on October 5, 2017, not on September 23. Meade announced that, on October 5, Nibiru would eclipse the Sun, and North Korea, China and Russia would launch a combined nuclear attack on the United States. Then, Earth would be devastated by a series of magnitude 9.8 earthquakes, Earth's magnetic pole would shift by 30 degrees, the United States would be split in half, and Barack Obama would be elected president for an unconstitutional third term. He predicted that the seven-year Great Tribulation would begin on October 15.

When October came, another apocalyptic writer, Terral Croft, predicted the arrival of Nibiru for November 19, a prediction again reported in the British tabloid press. Croft describes Nibiru as a "black star" at the edge of the Solar System, which, rather than colliding with Earth, would form an apocalyptic conjunction with Earth, leading to massive earthquakes. Croft claimed that earthquakes have been increasing worldwide in the leadup to the conjunction, though The Washington Post, quoting the United States Geological Survey, was quick to point out that earthquakes had decreased in both power and frequency over the year. Paul Begley, a YouTube conspiracy theorist and pastor at the Community Gospel Baptist Church in Knox, Indiana, also predicted in one of his YouTube videos that Nibiru would appear in 2017 and declared that the solar eclipse was a sign of the apocalypse and the rogue planet. Around 12 April 2018, Meade cited an alleged 23 April astrological conjunction in Virgo and predicted that Nibiru would appear during the conjunction and presage the Rapture; Space.com commented that nothing resembling such a conjunction was forecast for April 23.

Scientific rejection Astronomers reject the idea of Nibiru and have made efforts to inform the public that there is no threat to Earth. They point out that such an object so close to Earth would be easily visible to the naked eye and would cause noticeable effects in the orbits of the outer planets. (this page relates to the initial supposed 2003 arrival, but holds just as well for later dates such as 2012) Most photographs purporting to show "Nibiru" beside the Sun are lens flares, false images of the Sun caused by reflections within the lens. Claims that the object has been concealed behind the Sun are untenable.

An orbit like that of Nibiru (within the planetary region of the Solar System) is inconsistent with celestial mechanics. David Morrison, a NASA space scientist, explains that after just one previous flyby of Earth, such as proponents claim happened in Sumerian times, Earth itself would no longer be in its current near-circular orbit and would be likely to have lost its Moon. If Nibiru were a brown dwarf it would have even worse effects, as brown dwarfs are far more massive. Since Pluto is now frequently observed by backyard telescopes, any giant planet beyond Pluto would be easily observed by an amateur astronomer, and if such an object existed in the Solar System, it would have passed through the inner Solar System a million times by now.