Specific allegation
A large unseen body called Nibiru was alleged to be approaching Earth and due to pass or collide in 2012. Versions shifted the object's name, path, and deadline. This is not the separate Planet Nine hypothesis, which concerns a possible distant orbit and predicts no near-term encounter.
Chronology and context
The prediction circulated online before the 2012 winter solstice and was often attached to the Maya calendar. The date passed without an encounter. Maya Long Count inscriptions mark a cycle transition, not an astronomical catastrophe; planetary ephemerides showed no predicted close approach.
Observations and physical record
A nearby massive body would perturb planetary and spacecraft trajectories and emit detectable reflected or thermal light. WISE surveyed the sky in infrared, while decades of astrometry track planetary motion. Neither records the asserted object or its gravitational effects; no predicted impact signature occurred in 2012.
Established scientific account
Astronomers continue to investigate possible distant planets, but that research is distinct from Nibiru. A faraway cold object could escape some surveys; a large body near Earth could not plausibly evade gravity measurements and observations. The event left no observable trace consistent with the claim.
Limits and contrary evidence
Survey completeness is finite, and no instrument excludes every small object at every distance. That limitation does not rescue a specific, nearby, massive object forecast for 2012. The claim repeatedly changed dates and details after failed predictions, whereas an actual orbit would yield checkable positions.
What could change the assessment
A reversal requires a real object, repeated independent observations, an orbit matching a prediction published before its deadline, and archival evidence explaining missed detections. New distant-planet candidates do not meet this test. Publish ephemerides and raw data so observatories can make independent checks.
A genuine close approach would have produced a moving object visible to multiple observatories, not merely anonymous warnings. The claimed timing also implied a strong gravitational disturbance; planetary ranging can test that independently of imagery. Neither line of evidence supports an object on the forecast trajectory.
Calibrated conclusion
The 2012 collision claim is false: no Nibiru arrived, and no credible physical record supports the asserted approach.
Sources and scope
- WISE infrared surveySurvey constrains nearby cool objects within its sensitivity limits.
- NASA: Planet NineSeparates a distant hypothesis from the Nibiru story.
- Batygin & Brown, Astronomical JournalPeer-reviewed dynamical proposal, not a direct detection.