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Horizon

2050 near term · 2075 primary horizon · 2100 long arc · status Q4 2026

Every claim is pinned to a horizon year and paired with an experiment that would confirm or kill it. Most of those tests are scheduled inside the next decade, and several of them are Chinese.

Horizons
3
Milestones
66
Experiments
23
Flight tests
8
Falsifiers
40
Confidence
Building

The frame

Dated Claims, and the Tests That Would Break Them

A forecast is only useful if it can be wrong.

The forecast runs on three horizons: the near term to 2050, the primary horizon to 2075 and the long arc to 2100. Each asserts specific, dated things, and each claim is paired with the observation that would break it.

Most of those observations are near term and already scheduled: Starship ship-to-ship propellant transfer and the Block 3 catch, the AI1 compute prototypes, Chang'e-7 and Chang'e-8 at the lunar south pole, Tianwen-3's Mars sample return and China's crewed landing on Long March 10.

The Horizon pages
PageHoldsRated
Timeline66 milestones, filterable by destination, decade and confidenceBuilding
Experiments Board15 ranked experiments, 8 added since, 8 flight testsModeled
Falsifiers40 claims, what breaks each, and when we knowModeled
2050 - Near TermEvery destination at 2050Building
2075 - Primary HorizonEvery destination at 2075Projected
2100 - The Long ArcEvery destination at 2100Modeled
Interplanetary MarketsWhat trades between bodies, and why bulk does notModeled
GovernanceLight time, the Sovereignty Ladder and who goesModeled
Discovery EconomyScience off Earth and who pays for itModeled

The three horizons

2050, 2075, 2100

Each horizon asserts a different stage of the space-industrial transition.

The three horizons
HorizonWhat it assertsRated
2050 - Near TermMature Earth-orbit industry with Starmind compute; Artemis and ILRS bases; first Mars landings; the first cislunar propellant economyBuilding
2075 - Primary HorizonBelt industrialization; a Mars settlement past its evacuation line; lunar mass-driver export; the Callisto anchorProjected
2100 - The Long ArcFlybys launched toward Alpha Centauri; the Mercury beam array; lens telescopes beyond 548 AUModeled

The Experiments Board

The Tests That Move the Claims

The top of the ranked list, and the flight tests already scheduled.

Experiments, top of the board
ExperimentWhat it settlesRated
Maintenance-record studyReal failure rates and spares depth for a remote site; ranked firstModeled
Partial-gravity ringWhether Mars can be settled rather than only occupiedModeled
Ship-to-ship propellant transfer · SpaceXWhether anything beyond low Earth orbit is affordableBuilding
Chang'e-7 ice survey · CNSASecond direct measure of lunar polar ice gradeBuilding
Tianwen-3 · CNSAMars ascent and return, the hardware no one else has fundedBuilding

Full board: Experiments Board.

Falsifiers

What Would Break the Thesis

The conditions that take the forecast down rather than delay it.

Falsifiers
If this holdsWhat it breaksRated
Propellant transfer never closesThe Moon and Mars stay resupply-fed outpostsBuilding
Partial gravity proves hostile to developmentSettlement fails where outposts succeedModeled
Launch cost floors far above projectionThe step reverts to a slow curveProjected
Orbital compute proves uneconomicThe cadence case loses its anchor customerBuilding

All 40 claims: Falsifiers.

China

Chinese Programs on the Horizon

Dates held in public across the Moon, Mars and Jupiter.

Chinese milestones
ProgramMilestoneRated
Chang'e-7 · CNSASouth-pole ice survey; launch postponed 24 August 2026Building
Chang'e-8 · CNSAResource use and construction, 2028Building
Mengzhou, Lanyue, Long March 10 · CMSACrewed lunar landing before 2030Building
Tianwen-3 · CNSAMars sample return, 2028 launch, samples around 2031Building
Tianwen-4 · CNSACallisto orbiter, launch around 2029-2030Projected
ILRS · CNSA and RoscosmosBasic station and nuclear power station delivery, 2035Projected

Contested

Deliberately Not Claimed

The load-bearing uncertainties, tagged with the confidence they actually earn.

Projected

Horizon years are anchors, not predictions. A slip in propellant transfer or launch cost moves the whole sequence right; a breakthrough moves it left. The order is firmer than the calendar.

Modeled

The long arc is the least constrained. 2100 rests on compounding that has not started; it is the direction the near-term tests point.

Building

The falsifiers are the content. If propellant transfer, partial-gravity physiology or the launch-cost floor goes the wrong way, the horizons get revised, not defended.

Record

Provenance and Data Sources

Confidence
Building for the 2050 near term - Projected for 2075 - Modeled for the 2100 long arc
Status date
Q4 2026
China
Chang'e-7 and Chang'e-8; Mengzhou, Lanyue and Long March 10; Tianwen-3 and Tianwen-4; ILRS
Weakest link
The 2100 long arc, and any falsifier that resolves against the forecast