124 forecasters

Will Planet Nine be discovered before 2030?

16%chance

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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

Meet ‘Planet Y’ As New Evidence Suggests Secret World Beyond Neptune

Forbes•Sep 11, 2025

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