Blue Origin hands NASA a full-scale Moon lander cabin for Artemis training
NASA has a new piece of hardware to train on: a full-scale prototype of the Blue Origin Mark 2 lunar lander's crew cabin, now installed at Johnson Space Center in Houston. The mockup stands over 15 feet tall and represents the section of the lander where astronauts will live and work during future Artemis missions. NASA and Blue Origin will use it to run mission simulations, spacesuit checkouts, communications drills with mission control, and moonwalk rehearsals.
The lander
The Mark 2 cabin prototype covers only the lower crew compartment. The complete lander, when fully assembled, will stand around 52 feet tall — purpose-built for returning astronauts to the lunar surface under the Artemis program. As NASA's official announcement explains, the human-in-the-loop tests at Johnson will feed directly into the integrated simulator development that precedes crewed missions.
Blue Origin is also running a parallel track with the uncrewed Mark 1 lander, called Endurance, which has already completed vacuum chamber thermal testing at NASA's facilities. That vehicle is on track for a cargo mission to the lunar south pole in 2026, carrying scientific equipment ahead of any crewed attempt.
The race to the Moon
Artemis III, currently targeted for late 2027, will not attempt a lunar landing. Instead, the Orion crew will travel to orbit and conduct rendezvous and docking tests with whichever lander — Blue Origin's or SpaceX's Starship HLS — is ready first. Both companies have told NASA they can meet that late-2027 deadline, per Scientific American. The actual crewed Moon landing has shifted to Artemis IV, currently planned for 2028.
That schedule puts Blue Origin in a strong position. Starship HLS faces significant engineering challenges around in-orbit propellant transfer — a complex operation required before it can descend to the surface. Blue Origin, meanwhile, is advancing both cargo and crewed variants on parallel timelines and has now moved training hardware into NASA facilities, a concrete step that signals readiness on the agency's own turf.
What comes next
NASA aims to land astronauts on the Moon's south pole for the first time in 2028. Whether Blue Origin or SpaceX gets there first will depend on which system clears a series of technical milestones over the next two years. For now, the Mark 2 cabin sitting in Houston is the most tangible sign yet that the hardware — and the training — is moving forward.
