NASA shifts Artemis III to low-Earth orbit test, targeting late 2027 launch

NASA has announced that the Artemis III mission will launch in late 2027 as a low-Earth orbit test flight rather than proceeding directly to a lunar landing. The strategic adjustment, driven by NASA Administrator Jared Isaacman three months ago, aims to mitigate risks for the subsequent Artemis IV lunar landing by preserving the final Interim Cryogenic Propulsion Stage for use in the later mission. Instead, the agency will utilise a spacer to simulate the mass and dimensions of an upper stage without propulsive capabilities.

The revised Artemis III mission will involve four astronauts aboard the Orion spacecraft, launched on the Space Launch System rocket, rendezvousing with one or both of the lunar landers under development: SpaceX’s Starship and Blue Origin’s Blue Moon Mark 2. The primary objective is to test docking procedures and coordinate operations between multiple spacecraft, serving as a stepping-stone to the Artemis IV lunar landing mission. This approach mirrors the Apollo 9 mission in March 1969, where astronauts separated from the Command Module to test the Lunar Module before returning and docking.

Jeremy Parsons, Moon to Mars acting assistant deputy administrator, stated that this mission will integrate more partners and interrelated operations to learn how Orion, crew, and ground teams interact with hardware from both providers. The agency is currently defining the concept of operations for the mission, informed by capabilities provided by Blue Origin and SpaceX. The space community has largely applauded the decision to reduce risks through an interim test, noting it greatly increases the chance of success with the eventual lunar landing mission.

Significant uncertainties remain regarding the maturity of the landers and whether astronauts will enter them. The landers involved in this test are referred to as pathfinders, indicating they are not yet fully mature vehicles. While some decisions are yet to be determined, astronauts could potentially enter at least one lander test article. This sets up a dilemma between meeting the 2027 deadline and ensuring adequate testing, as waiting longer could allow for higher-fidelity vehicles and the availability of the Axiom Space-developed spacesuits, which are still in development.

The Artemis III astronauts have not yet been named but could be selected within the coming months. The decision to accelerate the timeline aligns with Isaacman’s emphasis that the competition with China to return humans to the Moon will be decided by months rather than years. However, delaying the launch risks losing schedule concordance with Artemis IV, complicating the agency’s broader Moon to Mars objectives.