NASA’s Artemis III Lander Test: A Full‑Scale Dress Rehearsal for a New Moon Return

After a half‑century gap since Apollo 17, NASA is gearing up for another human foothold on the Moon. The big push is slated for 2028 with Artemis IV, but before the actual descent a smaller, yet crucial, rehearsal will take place in low‑Earth orbit.

Next year the agency plans a demonstration mission that will bring together the Orion crew capsule, launched on the massive Space Launch System (SLS), and two commercial Human Landing System (HLS) prototypes – SpaceX’s latest Starship version (often called V3) and Blue Origin’s Mark 2 Blue Moon lander.

Both landers will be sent up on their own rockets – Starship on its Super Heavy booster, Blue Moon on a New Glenn – and will park in a modest low‑Earth orbit while Orion makes its way up the same trajectory. Once Orion arrives, the crew will perform a series of rendezvous and docking maneuvers that mimic the choreography expected during a real lunar landing.

When the Orion hatch opens, two of the four astronauts will slip into Orion Crew Survival System (OCCS) suits, float across the docking tunnel, and step inside the test lander. No one will actually launch to the Moon on this flight; the goal is simply to validate the hardware, software and procedures that will later carry humans to the lunar surface.

Blue Moon’s test article will also carry a “lunar surface spacesuit mass simulator” – a pretty heavy mannequin outfitted with sensors that records how a real suit would affect cabin conditions. It’s the same concept that flew on Artemis I as the “Moonikin”. The data will help engineers fine‑tune the Environmental Control and Life Support System (ECLSS) for future crewed missions.

SpaceX’s Starship will be fitted with an extra nose‑mounted docking mechanism so NASA can evaluate how Orion and Starship interact in space. Even though the crew won’t board the Starship on this flight, the docking test is essential because the actual lunar version of Starship will later serve as the primary descent and ascent vehicle for Artemis III and IV.

“Each landing‑system provider took a different approach for Artemis III,” said Steve Creech, NASA’s Human Landing System Program manager. “These aggressive test objectives, combined with the uncrewed lunar demonstrations, will give us the confidence we need before putting astronauts on the surface.”

The schedule is tight. After Blue Moon finishes its system checks – a period that could last up to a month in a parking orbit – the SLS will lift off with Orion. Shortly afterward, Starship will launch on its own timeline, and the two landers will sit side‑by‑side waiting for the crewed capsule.

All three companies will also practice ground‑side operations: processing the vehicles at launch pads, running control‑center simulations, and swapping data between sites across the United States. It’s a bit like a dress rehearsal for a Broadway show, except the stage is a 400‑kilometre‑high orbit and the props cost billions.

When the mission wraps up, Orion will de‑orbit and splash down safely, bringing back valuable telemetry and crew feedback. That information will feed directly into the Artemis III timeline, smoothing the path for the first crewed lunar landing since 1972.

In short, this LEO test isn’t just a “nice‑to‑have”. It’s the critical bridge between the unmanned Artemis I‑II flights and the full‑scale human return to the Moon that NASA hopes to achieve in the next few years.