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 | whois | history | safety | sitesearch | Google AI Mode | 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 |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 en.wikipedia.org - Wikipedia: Nibiru cataclysm, history of the claim and failed dates |
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") |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
| jpl.nasa.gov (video) - NASA JPL video: no Nibiru, nothing hurtling toward us |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 science.nasa.gov (planetary defense) - NASA Planetary Defense Coordination Office |
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 sservi.nasa.gov - NASA SSERVI: The Truth About Nibiru (David Morrison explains why it does not exist) |
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| The real science: the search for Planet Nine | ||||||||
 caltech.edu - Caltech (2016): the Planet Nine hypothesis by Batygin and Brown |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 iau.org - International Astronomical Union: names planets and sets definitions |
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 rubinobservatory.org - Vera C. Rubin Observatory: sky survey searching the outer solar system |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
| science.nasa.gov - NASA: Hypothetical Planet X (Planet Nine), not observed and may not exist |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
| science.nasa.gov (dwarf planets) - NASA: Pluto, Eris and the dwarf planets |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
| science.nasa.gov (Kuiper Belt) - NASA: the Kuiper Belt beyond Neptune |
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 zooniverse.org - Backyard Worlds: Planet 9, NASA-funded citizen science |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
| Fact-checks and skeptical science | ||||||||
 planetary.org - The Planetary Society |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 skepticalinquirer.org - Skeptical Inquirer: science and critical thinking |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 skyandtelescope.org - Sky and Telescope: astronomy news and observing |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 snopes.com - Snopes: fact-checks of viral doomsday claims |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 space.com - Space.com: space and astronomy news |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
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