NASA's Artemis 3 Crewed Lunar Landing Will Have Occurred By The End Of 2031.

Will NASA's Artemis 3 Moon Landing Happen By 2031?

NASA's Artemis 3 mission aims to land astronauts on the Moon for the first time since Apollo 17 in 1972. The current target is September 2026, but internal SpaceX documents obtained by Politico suggest the earliest realistic crewed landing attempt is September 2028. Given historical delays, a landing by the end of 2031 is plausible but not guaranteed. Our probability estimate is 50%.

What Is The Official Verification Criterion?

The mission will be confirmed as successful only when NASA officially announces that astronauts have touched the lunar surface using the Starship Human Landing System (HLS). This announcement must occur on or before December 31, 2031.

What Does SpaceX's Internal Timeline Show?

According to Politico's report, SpaceX plans a series of milestones before the crewed landing:

• June 2026: Orbital refueling demonstration
• June 2027: Uncrewed lunar landing
• September 2028: Earliest possible crewed landing attempt

These dates are internal and have already slipped multiple times. The critical bottleneck is orbital cryogenic propellant transfer, which requires about 12 separate refueling launches. This technology has never been demonstrated in space.

Why Is The Program Delayed?

Three major technical hurdles remain unproven:

1. Orbital refueling: Transferring supercold liquid methane and oxygen between Starships in orbit is unprecedented. 2. Heat shield performance: Starship's ceramic tiles have failed during reentry tests. 3. Crew safety certification: NASA requires extensive testing before allowing humans on Starship.

Artemis 2, a crewed lunar flyby, is currently scheduled for February 2026. If that slips further, Artemis 3 will likely follow. Apollo missions launched every 4.5 months; Artemis cannot yet achieve a yearly cadence.

What Are The Counterarguments To A 2031 Landing?

The strongest argument against the 2031 timeline is the unproven nature of orbital fuel transfer. No agency or company has ever performed cryogenic propellant transfer in orbit at this scale. Additionally, Starship's development has repeatedly missed deadlines. NASA itself moved the Artemis 3 target from 2027 to 2028, and further delays are possible.

What Supports The 50% Probability?

SpaceX uses a rapid iterative development approach, launching and testing prototypes frequently. The company has already demonstrated orbital flight and booster catch. The financial weight of NASA's contract, combined with political pressure to return to the Moon before China, provides strong motivation. If the refueling chain works even once, the landing could follow within months.

What Happens If Artemis 3 Succeeds By 2031?

A successful landing would mark humanity's return to the lunar surface after more than 50 years. It would also validate the Starship architecture for deep space missions, opening a path to a permanent lunar base and eventually Mars. Failure to land by 2031 would likely trigger a major program review and possible redesign.

Frequently Asked Questions

What Is The Difference Between Artemis 2 And Artemis 3?

Artemis 2 is a crewed flyby around the Moon without landing, scheduled for February 2026. Artemis 3 is the first crewed landing mission, using SpaceX's Starship HLS as the lunar lander. Artemis 2 tests the Orion capsule and life support; Artemis 3 tests the landing system and surface operations.

Why Does Starship Need 12 Refueling Launches?

Starship must depart Earth orbit with full tanks to reach the Moon and land. However, it cannot lift off from Earth with enough fuel for the entire round trip. Therefore, SpaceX plans to launch a depot Starship into orbit, then send multiple tanker Starships to transfer propellant. Each tanker carries about 100 tons of fuel, and 12 launches are needed to fill the depot completely.

Has NASA Officially Confirmed The 2031 Deadline?

No. NASA's official target for Artemis 3 is currently September 2026, but the agency has acknowledged that this date is unrealistic. The 2031 date in this analysis is a probabilistic projection based on SpaceX's internal schedule and historical slippage. NASA will only confirm a landing when it actually occurs.