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21
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124
forecasters
Will Planet Nine be discovered before 2030?
15%
chance
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Authors:
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Opened:
Oct 1, 2020
Closes:
Apr 15, 2026
Scheduled resolution:
Jan 1, 2030
Spot Scoring Time:
Oct 3, 2020
Natural Sciences
Space
News Match
Meet ‘Planet Y’ As New Evidence Suggests Secret World Beyond Neptune
Forbes
•
Sep 11, 2025
Learn more
about Metaculus NewsMatch
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