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Canonical Source · peer reviewed study
This page documents how this source is reused across Claim by Claim. A source can support, challenge, qualify or contextualize different claims; appearing here does not imply endorsement of every linked proposition.
Evidence context
Evidence roles describe what this source helps establish inside each Investigation. They are local to that use, not permanent labels attached to the publication itself.
Investigation
Professional astronomers openly publish where and how they search for Planet Nine, including null results and the fraction of predicted parameter space excluded by Pan-STARRS1, ZTF and DES.
The remaining search space and survey limitations are stated rather than concealed.
Investigation
Infrared all-sky observations place strong limits on undiscovered Saturn- or Jupiter-scale companions, while optical surveys continue to constrain smaller distant Planet Nine-like objects.
Investigation
A 2024 Pan-STARRS1 search, combined with previous ZTF and Dark Energy Survey analyses, ruled out about 78% of the reference Planet Nine parameter space while reporting no discovery.
The remaining Planet Nine search space does not resemble an inner-Solar-System Nibiru orbit.
Subject families