Will the U.S. confirm that aliens exist before July 2026
Leader sits at 23% across 5 bound outcomes, runner-up at 16%. This is a winner-take-all market — the headline is the leader’s price, not an arithmetic mean.
Leader probability
Before Jan 20, 2029
Outcomes
5
winner-take-all
Runner-up
16¢
Before 2028
Spread
7pp
contested
24h volume
$106K
liquid
Closes
Jan 20, 2029
923 days
Venue
Kalshi
5 bound
30-day trend
Bracket family
How the bracket ladder is priced.
Each row is one outcome on the venue. Sorted by 24h volume — the heaviest book is at the top.
Cluster 1
Will the U.S. confirm that aliens exist
Will the U.S. confirm that aliens exist before 2027?: Before 2027
KXALIENS-27
Will the U.S. confirm that aliens exist before Dec 1, 2026?: Before December
KXALIENS-26DEC
Will the U.S. confirm that aliens exist in 2028?: Before 2028
KXALIENS-27-28
Will the U.S. confirm that aliens exist in 2029?: Before Jan 20, 2029
KXALIENS-27-29
Will the U.S. confirm that aliens exist before Nov 1, 2026?: Before November
KXALIENS-26NOV
Analysis
Markets are pricing a 33% probability that the U.S. government will officially confirm the existence of extraterrestrial life before January 20, 2029. The relatively low odds reflect the absence of credible public evidence and the high bar for official government confirmation, despite increased congressional scrutiny of UAP (Unidentified Anomalous Phenomena) reports and declassification efforts. The near-term contracts show traders assign substantially lower probabilities to confirmation in 2026 and 2027 (8% and 17% respectively), suggesting market skepticism about imminent disclosure. Key catalysts include ongoing congressional hearings on UAP, the status of classified materials reviewed by government task forces, and any formal statements from executive or legislative branches. The current probability reflects genuine uncertainty about both the existence of extraterrestrial life and the U.S. government's willingness or ability to make an official confirmation if evidence exists.
- ›Congressional UAP hearings and declassification timelines directly influence expectations; the rate and substance of government disclosures through 2028 will be observable
- ›The probability declines substantially for nearer-term resolution (8¢ for 2026 vs 33¢ for pre-Jan 2029), indicating traders expect any confirmation would require years of investigation and institutional coordination
- ›No credible physical evidence of extraterrestrial life has been publicly disclosed; confirmation would require either direct evidence or unprecedented official statement
- ›The question requires U.S. government confirmation specifically, not media reports or scientific consensus, raising the evidentiary and political bar significantly
- ›Trading volume concentrates on the 2029 deadline ($10,820 24h vol), while 2026 resolution receives minimal volume ($7,486), suggesting low market confidence in near-term resolution
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These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.
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How we compute these odds
SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.
For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.
Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.
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