NASA reveals new details about Artemis 3 astronaut mission

NASA provided new details about Artemis 3 on May 13, confirming the mission will focus on testing rendezvous and docking operations in low Earth orbit rather than a lunar landing. The mission will involve four astronauts aboard the Orion spacecraft, which will dock with one or both of NASA’s commercial lunar landers—SpaceX’s Starship and Blue Origin’s Blue Moon—though neither will be used for a moon landing. Artemis 3 marks a shift from earlier plans, which aimed to land astronauts near the moon’s south pole. The mission will use NASA’s Space Launch System (SLS) rocket but replace the functional upper stage with a dummy spacer to maintain structural compatibility. This spacer will connect the Orion stage adapter and launch vehicle stage adapter, with design work underway at Marshall Space Flight Center in Alabama. The change reduces costs since Artemis 3 won’t require the upper stage’s propulsion for a lunar trajectory. Astronauts will spend more time in Orion than during Artemis 2, which lasted 10 days, to further assess life support systems. Orion’s European-built service module will handle propulsion to stabilize its orbit around Earth, increasing flexibility for launch opportunities. NASA did not disclose a mission duration for Artemis 3 but emphasized its role as a critical step toward Artemis 4, which will attempt a lunar landing. The revised architecture was announced in late February, aligning with NASA’s broader goal of testing lunar operations before human missions to the moon’s surface. The agency stressed the complexity of Artemis 3, calling it one of its most challenging undertakings to date.