Blue Origin Moon Lander Completes Testing at NASA Vacuum Chamber

Also known as Endurance, MK1 is an uncrewed cargo lander funded by Blue Origin as a commercial demonstration mission to advance human landing system capabilities in support of NASA’s Artemis program. The testing in Chamber A represents a public-private partnership model, with Blue Origin conducting the work under a reimbursable agreement under the Space Act.

Endurance will demonstrate precision landing, cryogenic propulsion, and autonomous guidance, navigation, and control capabilities in support of future operations on the lunar surface. In addition to its primary objectives, MK1 will carry two NASA science and technology payloads this year as part of the Commercial Lunar Payload Services (CLPS) initiative to the lunar South Pole region: the Stereo Cameras for Lunar Plume Surface Studies, a high-resolution camera array that will collect images of the interaction between the lander’s engine plume and the lunar surface during descent and landing, and the Laser Retroreflective Array, which assists spacecraft in orbit to determine a more precise location using reflected laser light.

Through CLPS, NASA partners with U.S. companies to conduct scientific research and technology demonstrations on the Moon, advancing understanding of the lunar environment and supporting future crewed missions as part of the agency’s Artemis campaign.

Testing in NASA’s Johnson A Chamber, one of the world’s largest thermal vacuum testing facilities, allowed engineers to model the vacuum of space and the extreme temperature conditions the spacecraft would experience during flight. By recreating these conditions in the field, teams evaluated system performance and verified structural and thermal integrity before launch. NASA and Blue Origin will integrate lessons learned from MK1 design, integration and testing to support future NASA Artemis missions that return U.S. astronauts to the Moon.

The development of MK1 contributes to technology maturation and risk reduction for future human-class systems, including Blue Moon Mark 2 (MK2), a larger crewed landing system designed to safely transport astronauts from lunar orbit to the surface and back, enabling sustained human exploration in the Moon’s South Pole region.

MK1 testing at NASA Johnson is possible through the agency’s “gateway” approach: a coordinated process that allows commercial partners access to NASA facilities and technical expertise while maintaining safety, mission assurance, and alignment with agency goals.

More information about Thermal Vacuum Chamber A is available at https://www.nasa.gov/setmo/facilities/thermal-vacuum-chamber-a/