Artemis 3 decision looms as NASA weighs orbit and landing test plans
NASA is nearing key decisions on artemis 3 even before Artemis II has returned to Earth, with splashdown expected Friday evening in the Pacific Ocean off San Diego. The agency is now debating whether artemis 3 should begin in low-Earth orbit or high-Earth orbit as it tries to reduce risk before the planned lunar landing mission. NASA Administrator Jared Isaacman said Tuesday that senior-level mission design discussions had already started, and the next step is to lock in a blueprint.
Orbit choice now sits at the center of artemis 3 planning
Isaacman said one of the main questions is the initial orbit for artemis 3, framing the choice as a tradeoff between low-Earth orbit and high-Earth orbit. Low-Earth orbit could let NASA fly the Space Launch System without using the Interim Cryogenic Propulsion Stage, preserving that stage for Artemis IV, while a higher orbit would require it to push Orion farther from Earth.
A high-Earth orbit would more closely match thermal conditions near the Moon and would also give Orion a stiffer test for its modified heat shield. That matters because the spacecraft is described as sensitive to thruster pluming and other thermal issues. The closest Apollo comparison cited is Apollo 9, which tested rendezvous in low-Earth orbit.
NASA is also deciding which lander Orion will meet
Another major issue for artemis 3 is whether Orion will dock with one or both of NASA’s Human Landing Systems. Those systems are SpaceX’s Starship upper stage and Blue Origin’s Blue Moon lander.
NASA’s stated preference is to test with both vehicles to gather stronger performance data and confidence in handling. Isaacman said that could still be possible on a mission in 2027, but the timeline depends on hardware readiness. Starship V3 is in final testing before a debut launch that could come in about a month, while Blue Moon Mk. 1 is wrapping up vacuum-chamber testing at Johnson Space Center in Houston.
Artemis II’s return is still the next near-term milestone
The Artemis II crewed mission has not yet returned to Earth, but NASA expects Orion to splash down Friday evening off San Diego. That return matters because it comes as the agency evaluates how the broader lunar campaign should move forward, including the changes that shifted the planned landing mission to Artemis IV.
NASA announced six weeks ago that it was modifying the schedule to insert a mission before the lunar landing attempt. That new mission, now designated artemis 3, is intended to fly in Earth orbit and help “buy down” risk for the later landing mission.
What the agency has said, and what comes next
Isaacman said the main value of the next mission is to create a safer path for the lunar landing campaign, while also giving NASA room to study Orion’s performance in a demanding environment. He said the first senior-level design discussion took place Tuesday, and more decisions will follow as the agency compares orbit options and lander readiness.
For now, the key unanswered questions are limited but important: where artemis 3 will fly, which lander or landers Orion will meet, and whether the hardware timeline supports the agency’s current target. NASA’s next steps will likely shape not just the mission profile, but the risk posture for everything that follows.
