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Old 19th Apr 2024, 22:04
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ORAC
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https://arstechnica.com/space/2024/0...w-earth-orbit/

NASA may alter Artemis III to have Starship and Orion dock in low-Earth orbit

Although NASA is unlikely to speak about it publicly any time soon, the space agency is privately considering modifications to its Artemis plan to land astronauts on the surface of the Moon later this decade.

Multiple sources have confirmed that NASA is studying alternatives to the planned Artemis III landing of two astronauts on the Moon, nominally scheduled for September 2026, due to concerns about hardware readiness and mission complexity.

Under one of the options, astronauts would launch into low-Earth orbit inside an Orion spacecraft and rendezvous there with a Starship vehicle, separately launched by SpaceX. During this mission, similar to Apollo 9, a precursor to the Apollo 11 lunar landing, the crew would validate the ability of Orion and Starship to dock and test habitability inside Starship. The crew would then return to Earth.

In another option NASA is considering, a crew would launch in Orion and fly to a small space station near the Moon, the Lunar Gateway, and then return to Earth.

To discuss these options, Ars asked for an interview with Catherine Koerner, a deputy associate administrator who oversees Exploration Systems Development for NASA. Instead, the space agency offered a noncommittal statement.

"NASA continues to work toward the Artemis II crewed test flight in September of 2025 and the Artemis III test flight to land astronauts near the lunar South Pole in September of 2026," the statement read. "The agency evaluates element progress and status on a daily basis and uses that data to make decisions at the right time for each mission as a part of prudent programmatic and mission management.

“Should a particular hardware element not be available to support a mission as scheduled or planned, NASA will evaluate the readiness of available hardware for options to make those decisions with crew safety as the number one priority."…..

NASA has asked SpaceX to look at a mission where Orion would rendezvous with the Starship vehicle in orbit around Earth. Such a mission—whether called Artemis IIS or Artemis III—would solve a lot of problems for the space agency and appears to be the preferred option at this time. ….

Critically, it would verify the ability of the two spacecraft to dock in an environment where, if there were a problem, it would be much easier for the crew to return safely home. It would also validate the ability of astronauts to live inside Starship and perform some ascent and descent maneuvers.

Perhaps just as importantly, such a mission would allow the space agency to avoid a long gap between Artemis II and Artemis III.

No one is quite certain how long it will take SpaceX to deliver a Starship vehicle that is capable of landing safely on the Moon and then taking back off. The company is known for moving very fast in the development phase, but it still has a tremendous amount of work to do with Starship….
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