As of today, Monday, April 6, the Artemis II crew is currently on Flight Day 6, navigating the critical lunar flyby phase of their mission. While the world is watching NASA astronauts Reid Wiseman, Victor Glover, Christina Koch and CSA astronaut Jeremy Hansen test the limits of the Orion spacecraft and the Space Launch System (SLS) rocket, a more pragmatic technical pivot is happening behind the scenes regarding how humans will actually touch down on the lunar surface.
The Transport is Working; the Landing is the Bottleneck
The success of Artemis II—which launched on April 1 and has already seen the crew complete manual piloting demonstrations and a precise 17.5-second outbound correction burn—proves that NASA’s “bus” to the Moon is functional. The SLS rocket and Orion capsule are delivering on their primary objective: deep space crew transport. Though, the most complex piece of the architecture remains missing: the Human Landing System (HLS).
To solve the landing problem, NASA has moved away from a single-provider model, contracting both SpaceX for its Starship vehicle and Blue Origin for its Blue Moon lander. But the timeline for these vehicles has been a point of friction, leading NASA to make a significant architectural concession to accelerate the schedule.
In a move to trim development time, NASA has removed the requirement for the HLS landers to dock with the Lunar Gateway in a near-rectilinear halo orbit (NRHO). This specific orbital requirement was previously a cornerstone of the mission profile, intended to use the Gateway as a staging post for astronauts moving from Orion to the lander.
Both SpaceX and Blue Origin indicated that bypassing the Gateway docking process would significantly speed up their delivery timelines. By eliminating this step, NASA is essentially prioritizing the landing itself over the operational utility of the orbital station.
Technical Context: NRHO
Near-Rectilinear Halo Orbit (NRHO) is a highly elliptical orbit around the Moon. It was designed to provide the Lunar Gateway with a stable position that allows for continuous communication with Earth and easy access to the lunar south pole, but it adds significant complexity to the docking and undocking maneuvers required for a landing mission.
Pragmatism Over Architecture
This shift reflects a broader trend in modern spaceflight: the move toward “good enough” functional milestones over rigid, long-term architectural ideals. The original plan for the Gateway was to create a permanent lunar outpost, but the urgency to return humans to the surface has forced a re-evaluation of that sequence.
For SpaceX and Blue Origin, this change reduces the number of high-risk docking tests and software validations required for their respective landers. For NASA, it reduces the risk of a landing mission being delayed by the construction or operational readiness of the Gateway.
The immediate focus now returns to the Artemis II crew. With the lunar flyby underway, the mission’s final high-stakes hurdle is the fiery reentry through Earth’s atmosphere scheduled for this Friday. If Orion handles the return as well as it has handled the outbound journey, the path will be clear for the HLS vehicles to take center stage.
Analytical Q&A
Does removing the Gateway requirement compromise the long-term goal of a lunar base?
Not necessarily. While it changes the initial sequence of events, the Gateway remains a goal. Removing the docking requirement for the first few landings allows NASA to prove the landing technology first, which is a higher-risk variable than the orbital station.
This is a strategic redundancy move. By funding two different lander designs, NASA avoids a single point of failure. If one company faces a catastrophic technical setback, the entire Artemis program doesn’t grind to a halt.
Will the removal of the orbital docking requirement set a precedent for NASA to further simplify its deep space architecture in favor of speed?
