Will the US confirm that aliens exist by 2027?

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Active sub-markets

Market context

The underlying real-world event is the US government’s ongoing effort to disclose files on unidentified anomalous phenomena, with President Donald Trump recently directing agencies to identify and release documents related to extraterrestrial life, though no official confirmation has yet emerged [2].

Historically, comparable cases frame how to read the current 10% probability: the first release of US UFO files in May 2026 did not confirm extraterrestrial existence, and the Pentagon explicitly stated the materials were unresolved with no definitive determination possible [3]. Past congressional hearings featured whistleblowers claiming recovered non-human biologics, yet these accounts lacked official verification and were dismissed by experts as unverified and unreliable [4][5]. No government entity has ever formally announced alien life, meaning the market hinges on a singular, unprecedented official statement rather than precedent [5].

Traders should watch for scheduled announcements from the new multidisciplinary science advisory council formed in June 2026 to resolve UAP mysteries, which aims to determine whether sightings involve extraterrestrial activity [1]. Key catalysts include the Pentagon’s promise of further document releases, with a second set already published on May 22 and more actively processed for publication [3]. Dependencies include whether the council’s findings gain consensus among credible reporting or trigger a definitive statement from the President, Cabinet, Joint Chiefs, or a federal agency before the 2026 settlement deadline [1][2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.