Will the US confirm that aliens exist by 2027?

Platform comparison

Market context

The US government has not definitively confirmed that extraterrestrial life or technology exists, despite recent high-profile file releases and whistleblower allegations. President Donald Trump instructed federal agencies to disclose documents on alien life in early 2026, leading to the May release of over 160 UFO files under the PURSUE system; however, the Pentagon explicitly stated these records contain unresolved cases with no verifiable evidence of extraterrestrial origin [2][3].

Historically, US disclosures on UFOs have consistently failed to confirm alien existence. The first tranche of Trump-era files included pilot accounts and military reports but concluded the phenomena were unexplained rather than artificial or alien [3]. Whistleblower David Grusch alleged a decades-long crash-retrieval programme, yet the Pentagon rejected his claims as false and affirmed no such programme exists [1]. This pattern of unconfirmed anomalies frames the current 0% implied probability as a rational assessment of official evidence rather than public speculation.

Traders should monitor scheduled releases of further PURSUE files and any direct statements from the President, Cabinet, or Joint Chiefs. Trump has hinted at “very interesting” upcoming files, though physicist Kirkpatrick cautioned expectations should be tempered, noting no photographs or alien interviews exist in government records [6]. NASA Administrator Jared Isaacman recently confirmed no alien bodies or ships were found in the declassified data, reinforcing the absence of definitive proof [4]. Until an official, unambiguous declaration occurs, the market remains anchored to the status of unresolved phenomena.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

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

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.