TOTAL VOLUME:

$116.2b

24H VOL:

$74,768,153

24H TRANSACTIONS:

1,351,258,445

OPEN INTEREST:

$1,132,219,062

319,495

Markets across

31,429

events

MATCHED EVENTS:

3,600

PLATFORM COVERAGE:

5

Polymarket:

42%

VS.

Kalshi:

58%

Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result

Description

This event group tracks whether two SpaceX Starships will dock together by specific end-of-year deadlines (2026 or 2027). A qualifying docking requires two free-flying Starships (or equivalent-scale vessels) to physically connect in stable Earth orbit for at least 60 seconds.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

All platforms share identical definitions for qualifying vessels, docking mechanics, orbital stability requirements, and resolution methodology.Primary resolution logic: Consensus of credible reporting (major news outlets, official SpaceX statements, and verified orbital tracking data)

Core resolution logic:

  • Docking must involve two free-flying SpaceX vessels each equal to or exceeding Starship in scale (standard, tanker, depot, HLS, test article)
  • Vessels must physically join via mating hardware for at least 60 continuous seconds in stable Earth orbit (perigee ≥100km)
  • Any docking where one vessel is passively placed into the other’s interface does NOT qualify
  • Resolution occurs when credible reporting confirms a qualifying docking event before the deadline (December 31st ET)

Edge cases & clarifications:

  • Passive Docking: If one vessel is merely placed into the mating interface without active matching of velocity and connection via hardware, it does not qualify
  • Non-Free-Flying Vessels: Vessels delivered to orbit atop separate launch vehicles (e.g., capsules or payloads) do not count, even if they later dock
  • Orbit Stability: Orbits with perigee below 100km are considered unstable and do not qualify, even if a docking occurs
Timing: Resolution occurs immediately after credible reporting confirms (or rules out) a qualifying docking before the listed deadlineOur PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.
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Polymarket

This market will resolve to “Yes” if two SpaceX Starships successfully execute a docking maneuver in a stable Earth orbit between market creation and the listed date, 11:59 PM ET. Otherwise, this market will resolve to “No”. A qualifying docking maneuver must physically join two vessels, matching in velocity, into a connected structure via mating hardware for at least 60 continuous seconds. The two vessels must be in stable Earth orbit with a perigee of at least 100 kilometers above the Earth’s surface. The docking of any two SpaceX vessels which each serve as an integrated rocket-and-spacecraft and both equal or exceed Starship in scale will qualify regardless of their contents or variant (standard, tanker, depot, HLS, test article, etc.). The two vessels must be free-flying. Any capsule or payload carried to orbit exclusively atop a separate launch vehicle will not qualify. If either vessel is passively placed into the mating interface of the other vessel, that conjunction will not qualify. The resolution source for this market will be a consensus of credible reporting.

Predict

This market will resolve to “Yes” if two SpaceX Starships successfully execute a docking maneuver in a stable Earth orbit between market creation and the listed date, 11:59 PM ET. Otherwise, this market will resolve to “No”. A qualifying docking maneuver must physically join two vessels, matching in velocity, into a connected structure via mating hardware for at least 60 continuous seconds. The two vessels must be in stable Earth orbit with a perigee of at least 100 kilometers above the Earth’s surface. The docking of any two SpaceX vessels which each serve as an integrated rocket-and-spacecraft and both equal or exceed Starship in scale will qualify regardless of their contents or variant (standard, tanker, depot, HLS, test article, etc.). The two vessels must be free-flying. Any capsule or payload carried to orbit exclusively atop a separate launch vehicle will not qualify. If either vessel is passively placed into the mating interface of the other vessel, that conjunction will not qualify. The resolution source for this market will be a consensus of credible reporting.

Frequently asked questions

The dashboard for the Starship docking market aggregates data from multiple platforms, showing real-time probabilities and volume trends as traders assess the likelihood of two SpaceX Starships successfully docking. It provides a consensus view across venues, reflecting collective wisdom on timing and technical feasibility. With current volume at $0 and 24-hour volume of $0, the dashboard helps users monitor shifts in sentiment and liquidity around this high-profile space engineering milestone.

On Polymarket, this market currently prices the chance of a successful docking at 66.0%, reflecting trader optimism about SpaceX's rapid development cadence and test schedules. Analyst forecasts often vary, with some citing technical hurdles that could delay coordination between two Starships. The gap between Polymarket's implied probability and expert opinions may narrow as test flight data emerges, especially after high-profile launch updates or regulatory approvals that clarify timelines.

This market resolves around Jan 1, 2028, with the outcome confirmed once the event is verifiable from credible public reporting. A successful docking must be documented by reputable space news outlets or official SpaceX announcements showing two Starships physically connected in orbit. No specific technical threshold or internal review is required — only publicly observable evidence determines whether the condition is met.

Key signals include announced test flight schedules, successful or failed orbital refueling attempts, and updates on Starship thermal protection system readiness — all crucial for docking feasibility. Media coverage of prototype connections in orbit, regulatory approvals for dual-starship missions, or unexpected delays announced by SpaceX could shift probabilities sharply. Traders will also watch for competition dynamics, as rival heavy-lift capabilities may influence priority and timing for docking attempts.