# Will the US confirm that aliens exist by...

> Closed. Last odds frozen 14 h ago — final outcome on the venue.

URL: https://simplefunctions.dev/odds/us-confirm-that-aliens-exist
Updated: 2026-06-19T01:20:20.801Z
Category: general
Status: historical
Closes: 2026-12-31

## Headline

- Leader: December 31 at 10%
- Runner-up: September 30 at 5%
- Outcomes: 2 (winner-take-all)
- Venue: Polymarket (2 contracts)
- 24h volume: $145K

## Bound contracts (2)

| Outcome | Price | 24h | Volume | Venue | Slug |
|---|---|---|---|---|---|
| December 31 | 10¢ | −2pp | $46K | polymarket | /markets/will-the-us-confirm-that-aliens-exist-by-december-polymarket-0x747dc809fb79e1b05be09c42d6179459a58de2ef3e40f02484a4e1260f741f75 |
| September 30 | 5¢ | ±0 | $99K | polymarket | /markets/will-the-us-confirm-that-aliens-exist-by-september-polymarket-0xace3c72c24fccb6731433483ece41c780432d84850edccd5a6bf3147ccea62a9 |

## 30-day trajectory

| Day | December 31 | September 30 |
|---|---|---|
| 2026-05-20 | — | 10 |
| 2026-05-23 | 16 | 8 |
| 2026-06-04 | 14 | — |
| 2026-06-06 | — | 7 |
| 2026-06-11 | 11 | 5 |
| 2026-06-12 | — | 6 |
| 2026-06-17 | — | 5 |

_19 days of price history captured. Each row is the daily mean of intraday 5-min captures._

## Analysis

This probability reflects a less than 1-in-5 chance that the U.S. government will officially confirm the existence of extraterrestrial life by December 31, 2026. The low probability reflects skepticism about formal government confirmation occurring within seven months, despite increased public discussion of UAPs (unidentified aerial phenomena) and ongoing congressional scrutiny. Price variation across contract endpoints—21% for before 2027, 18% for year-end, 13% for September—suggests traders perceive the timeline as the binding constraint rather than the likelihood of confirmation itself. Key drivers include the pace of government investigations, congressional pressure, and the extremely high evidentiary bar required for official confirmation. The most immediate uncertainty centers on whether any congressional or Pentagon disclosures scheduled through 2026 would constitute formal confirmation versus continued ambiguity about UAP origins.

### Key factors

- Congressional UAP oversight committees have scheduled hearings but have not produced formal government confirmation of extraterrestrial life to date, and the definition of 'confirm' vs. acknowledging UAP unexplainability remains legally unclear
- The U.S. military and intelligence agencies continue investigating UAPs but have not presented evidence definitively attributing any incidents to extraterrestrial origin, focusing instead on exotic foreign technology or classified aviation programs
- Contract pricing suggests traders assign higher probability to pre-2027 confirmation (21%) than year-end 2026 (18%), indicating skepticism about the compressed seven-month timeline despite acknowledgment of non-zero possibility
- Major government reports and declassifications have not previously risen to the threshold of confirming alien existence, establishing an institutional precedent for measured language over extraordinary claims
- The definition of 'confirm' would require formal, explicit government statement—not inference, suggestion, or acknowledgment of unexplained phenomena—which represents an unusually high procedural and evidential bar

## Methodology

Headline is the **leader's price**, not an arithmetic mean — averaging disjoint winner-take-all outcomes is meaningless. Per-outcome prices come from the venue's last-traded mid; cross-venue values are simple means across contracts on each venue.

## How to use this data

- HTML: https://simplefunctions.dev/odds/us-confirm-that-aliens-exist
- JSON: https://simplefunctions.dev/api/public/odds?slug=us-confirm-that-aliens-exist

## License

CC-BY-4.0. Attribute "SimpleFunctions" with a link to https://simplefunctions.dev. See https://simplefunctions.dev/legal for terms.