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> RECORD OBS-0869 | status: DEBUNKED | filed 2026-07-31
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Killer Planet Nine

RecordOBS-0869
CategorySpace/Mars
StatusDEBUNKED
SummaryThis theory claims a hidden planet, often called Planet Nine or Nibiru, will collide with or otherwise destroy Earth. Proponents predict catastrophic events, but astronomers have found no evidence for such a planet in the inner solar system. The theory is a modern adaptation of the Nibiru cataclysm myth.
Origin2010s, based on the Nibiru cataclysm claims of Nancy Lieder and others.
Claimed
  • A large planet (Planet Nine or Nibiru) is on a collision course with Earth.
  • Governments and astronomers are hiding its existence.
  • The planet will cause mass extinction or pole shift.
Evidence / consensusNo astronomical evidence supports the existence of a planet on a collision course. The theory is a misinterpretation of hypothetical Planet Nine, which is a distant, undiscovered planet, not a threat.
> OBSERVER NOTE:
The theory conflates a legitimate scientific hypothesis (Planet Nine) with pseudoscientific doomsday predictions. The lack of any observable threat is telling.

Sources

  1. 25 biggest space conspiracy theories: Debunked | Space

Sources are external and provided for verification. Listing does not imply the Observer endorses their claims.