“The Lunar Gateway space station is not necessary for NASA's Artemis program to achieve its lunar objectives.”

A NASA-led international coalition, Gateway will be a space station in lunar orbit enabling long-term human exploration at the Moon and new opportunities for scientific discovery as a foundational system to support NASA's Artemis campaign. Gateway is essential to the Artemis architecture, along with the Space Launch System, Orion spacecraft, Human Landing System, and spacesuits that will enable extensive exploration of the Moon's South Pole.

As part of a Golden Age of exploration and discovery, NASA announced Friday the agency is increasing its cadence of missions under the Artemis program to achieve the national objective of returning American astronauts to the Moon and establishing an enduring presence. This includes standardizing vehicle configuration, adding an additional mission in 2027, and undertaking at least one surface landing every year thereafter.

A rapid return to the Moon requires the agency to minimize the number of systems involved with landing humans on the surface by 2024, so while future lunar landings will use the Gateway as a staging point in lunar orbit for missions to the surface, the agency's procurement for a commercially provided HLS left the door open for proposals that didn't use Gateway on early Artemis missions. For long-term operations, the Gateway provides a staging point for human and robotic lunar missions.

The Gateway lunar space station is a multi-purpose platform that offers capabilities for long-term exploration in deep space in support of NASA's Artemis campaign and Moon to Mars objectives. To ensure all flight hardware is ready to support Artemis IV — the first crewed mission to Gateway – NASA is targeting the launch of HALO and the Power and Propulsion Element no later than December 2027. SpaceX will provide the Starship human landing system that will land astronauts on the lunar surface during NASA's Artemis III mission.

On future missions, NASA and its partners will assemble the Gateway lunar space station in NRHO to serve as a hub for Artemis missions. NASA has selected SpaceX to provide the human landing system that will transport Artemis III astronauts from Orion in lunar orbit to the surface of the Moon and back again.

The lunar Gateway is to be the first international space station around the Moon and will support the most distant human space missions ever attempted, as part of the Artemis programme. The lunar outpost is being assembled for operation around the Moon, providing a place to live and work in lunar orbit.

The same budget request also included the cancellation of the Space Launch System (SLS), the Orion spacecraft, and the Lunar Gateway, all vital aspects of NASA's long-term vision for a "sustained program of lunar exploration and development."

The Lunar Gateway is a primary component of NASA's Artemis program... From the Gateway, NASA and international partners can provide essential support for long-term human presence on the lunar surface, as well as launching additional missions for deep space exploration.

The Gateway is an unneeded and costly diversion that should promptly be relegated to the dustbin of history. It is more efficient to simply transport astronauts and cargo directly to and from the lunar surface, rather than detouring to the Gateway for no discernable reason.

NASA has removed the Lunar Gateway from its "critical path" to return humans to the moon by 2024, according to a SpaceNews report. With new changes to the agency's plan to return astronauts to the moon with the Artemis program, NASA has removed the Gateway, a mini-space station that would facilitate crewed lunar landings, from its plan in favor of simpler solutions, Doug Loverro, the head of NASA's human spaceflight directorate, said Friday (March 13) at a meeting of the NASA Advisory Council's Science Committee, SpaceNews reported.

Artemis 2 is strictly a flyby mission. The goal is to confirm that Orion, SLS, and mission operations can safely support astronauts in deep space before attempting a lunar landing on a future mission. Landing systems, surface spacesuits, and Gateway infrastructure are not required for Artemis 2.

The same budget request also included the cancellation of the Space Launch System (SLS), the Orion spacecraft, and the Lunar Gateway, all vital aspects of NASA's long-term vision for a 'sustained program of lunar exploration and development.'

NASA's official Artemis architecture documents, such as the 2020 Artemis Program Baseline, designate the Lunar Gateway as a key enabler for sustained lunar presence, providing staging, refueling, and science capabilities for Artemis IV and beyond, though early landings like Artemis III proceed without it.

This argument however completely fell apart as well when NASA decided in 2020 that the Artemis III mission will bypass the Gateway altogether and have Orion dock directly with a Lunar Lander. This means that the Lunar Landers that NASA selected, the SpaceX Lunar Starship and Blue Origin Blue Moon both have the capability to provide the delta v for Orion to arrive in a NRHO, no Gateway necessary.

That said, Artemis 3 has no need for Gateway, Orion will dock with the lander, transfer the astronauts, and carry on with its mission. Gateway isn't a blocker to getting to the moon.

Artemis III is planned to go without any Gateway station whatsoever, so the assertion that the station is necessary doesn't appear to endure the facts. I wouldn't say Gateway is mandatory, but it definitely helps with mission planning and requirements. The Gateway is humanity's early "proving ground" beyond low Earth orbit. Its existence also ensures that human missions to the Moon will not be abandoned, since it is a long-term project, not a short-term one.