Planet X

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Planet X and Nibiru: the facts. Claims that a hidden planet called Nibiru will hit or pass near Earth and cause a doomsday have circulated online since the 1990s, and every predicted date has come and gone. NASA says Nibiru does not exist: there is no telescope evidence and no gravitational effect on the other planets, as there would be if it were real. Separately, some astronomers are looking for a possible distant 'Planet Nine' far beyond Neptune. It has not been found, may not exist, and would pose no threat to Earth. Science sources come first below.

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Links last checked Oct 17, 2026.

Text Only \| Markdown	X	whois	history	safety	sitesearch	Grok	Bing AI
The facts: no Nibiru is coming (start here)
cneos.jpl.nasa.gov - NASA Center for Near-Earth Object Studies: real close approaches, tracked daily	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
en.wikipedia.org - Wikipedia: Nibiru cataclysm, history of the claim and failed dates	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
jpl.nasa.gov - NASA JPL: 2012, a scientific reality check ("Nibiru... simply put, does not exist")	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
jpl.nasa.gov (video) - NASA JPL video: no Nibiru, nothing hurtling toward us	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
science.nasa.gov (planetary defense) - NASA Planetary Defense Coordination Office	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
sservi.nasa.gov - NASA SSERVI: The Truth About Nibiru (David Morrison explains why it does not exist)	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
The real science: the search for Planet Nine
caltech.edu - Caltech (2016): the Planet Nine hypothesis by Batygin and Brown	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
iau.org - International Astronomical Union: names planets and sets definitions	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
rubinobservatory.org - Vera C. Rubin Observatory: sky survey searching the outer solar system	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
science.nasa.gov - NASA: Hypothetical Planet X (Planet Nine), not observed and may not exist	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
science.nasa.gov (dwarf planets) - NASA: Pluto, Eris and the dwarf planets	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
science.nasa.gov (Kuiper Belt) - NASA: the Kuiper Belt beyond Neptune	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
zooniverse.org - Backyard Worlds: Planet 9, NASA-funded citizen science	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI
Fact-checks and skeptical science
planetary.org - The Planetary Society	X: @exploreplanets	whois	history	safety	search	AI Mode	Grok	Bing AI
skepticalinquirer.org - Skeptical Inquirer: science and critical thinking	X: @SkeptInquirer	whois	history	safety	search	AI Mode	Grok	Bing AI
skyandtelescope.org - Sky and Telescope: astronomy news and observing	X: @SkyandTelescope	whois	history	safety	search	AI Mode	Grok	Bing AI
snopes.com - Snopes: fact-checks of viral doomsday claims	X: @snopes	whois	history	safety	search	AI Mode	Grok	Bing AI
space.com - Space.com: space and astronomy news	X: none found	whois	history	safety	search	AI Mode	Grok	Bing AI

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