Is Earth flat?
🗂 Part of event: Is Earth flat? →💡 What the odds say
The market puts this at about a 2% chance — almost no chance.
No money — just record your call and see if you were right. Yes is at 2% right now.
Despite occasional celebrity endorsements and a persistent online community, the market heavily reflects that no conclusive public proof of a flat Earth has emerged, and the burden of overturning centuries of evidence remains astronomically high.
What's driving it
- • Shaq's viral claim that a 25-hour flight convinced him Earth is flat (Yahoo, Jul 4) briefly reignited pop-culture debate but did not produce any verifiable evidence.
- • An ongoing viral documentary series (Fathom Journal, Jun 18) detailing failed experiments continues to underscore the lack of reproducible flat-Earth proof.
- • Media coverage like The Telegraph's piece on why flat-Earth theory persists (Jun 25) and CNN's correlating flat-Earth belief with political sentiment (Forbes, Jun 1) highlight cultural traction but no scientific shift.
The case for YES
- • A credible, globally televised experiment or government release could turn public consensus overnight, though no such event is currently scheduled.
- • If a major scientific body — like NASA or a national space agency — were to unexpectedly endorse flat-Earth claims, that might constitute 'conclusive proof' as defined by credible reporting.
- • The market resolves to Yes only if proof becomes public by Dec 31, 2026; a sudden, unrebutted discovery in the second half of 2026 could theoretically force a Yes resolution.
The case for NO
- • There is zero credible scientific evidence supporting a flat Earth; articles like Star Walk's '7 Ways to Prove Earth Is Round' (Jun 9) illustrate the overwhelming contrary evidence.
- • The resolution requires a 'consensus of credible reporting' — a standard no flat-Earth claim has ever met, and no headline suggests such a consensus is forming.
- • Even viral figures like Shaq provide only anecdotal personal conviction (Yahoo, Jul 4), not the rigorous, falsifiable proof needed to shift scientific consensus.
What to watch
- • 2026-09-22: Flat Earth International Conference — if participants release new 'proof' that gains mainstream media attention, it could briefly shift odds toward Yes, though history suggests no credible evidence will emerge.
- • 2026-12-31: Market resolution deadline — as the date approaches without conclusive proof, No odds may consolidate further toward 99-100%.
- • 2026-10-15: Scheduled launch of a high-altitude balloon livestream by flat-Earth groups — if it unexpectedly shows a horizon curve, it could undermine the Yes case; if it does not, No odds likely hold.
AI-generated · grounded in recent news + odds · informational only, not advice. Verify on the source platform.
Data from Polymarket’s public API, for informational purposes only. PredictPal is not affiliated with any platform and does not facilitate trading.
Discussion
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How it resolves
Settled on-chain by UMA's optimistic oracle: once an outcome is clear, anyone can propose the result, which then enters a challenge window where it can be disputed with evidence before it finalizes.
⚖️ A proposed outcome can be disputed during a challenge window before it's final.
Resolution criteria
This market will resolve to "Yes" if conclusive proof that the earth is flat becomes public by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". The resolution source for this market will be a consensus of credible reporting.
ⓘ A market settles under its own written rules, which can lag what looks decided in the news — so the price may not move to 100% the moment an outcome seems obvious.
View the official rules on Polymarket ↗Related markets
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