Blue Moon: The ambitious lunar lander architecture designed to sustain a permanent human presence

Cultures · Published 3 October 2026 Swipe more like this →

In short: Blue Moon is a versatile family of lunar landers and infrastructure developed by a consortium led by Blue Origin. Designed to carry both cargo and astronauts to the Moon, the program utilizes advanced cryogenic technology to enable long-term orbital loitering, aiming to support a sustainable, permanent presence on the lunar surface.

The Blue Moon program encompasses two primary lander variants and a supporting space tug known as the Cislunar Transporter. The Mark 1 is an autonomous, uncrewed lander designed for cargo delivery, capable of transporting up to 3,000 kilograms to the lunar surface. Its development began in 2016, with the spacecraft serving as a platform for testing critical technologies like the BE-7 engine and advanced avionics. These systems are designed to be common across the program, ensuring that the robotic lander informs the development of the more complex human-rated versions.

In May 2023, NASA selected the Mark 2 human lander for the Artemis program under the Sustaining Lunar Development contract, valued at approximately US$3.4 billion. Unlike the earlier Integrated Lander Vehicle proposal, which was not selected, the Mark 2 is designed to carry four astronauts for up to 30 days. The architecture relies on the Cislunar Transporter, a reusable tug that refuels the lander in lunar orbit. Both vehicles utilize the BE-7 engine, which burns liquid hydrogen and liquid oxygen—propellants that could eventually be produced from lunar ice.

A central challenge for the program is managing cryogenic propellants during extended missions. Blue Origin is developing a solar-powered boiloff mitigation system to store liquid oxygen and hydrogen at temperatures as low as 20 K. This technology is vital for the lander's ability to survive the two-week-long lunar night and maintain operations in orbit. While the program has faced shifts in NASA's mission timelines, including potential adjustments for the Artemis III and V missions, the ongoing development of the Mark 1.5 and the Pathfinder flight test continue to push the boundaries of precision landing and long-term lunar infrastructure.

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