Artemis Program Faces Engineering Hurdles in Complex 2027 Lunar Lander Tests

Artemis Program Overview and History

The Artemis program represents the United States’ first serious attempt to return humans to the lunar surface since the final Apollo mission in 1972. Formally established via Space Policy Directive-1 in 2017, the initiative aims to land astronauts on the Moon and eventually construct a permanent base. As of 2026, the program has flown two successful missions: the uncrewed Artemis I, which sent an Orion spacecraft to lunar orbit in 2022, and the crewed Artemis II, which performed a lunar flyby in 2026. The program is built around a series of increasingly complex missions, with Artemis III planned for late 2027 to test Human Landing Systems in Earth orbit, Artemis IV slated for early 2028 as the first crewed lunar landing since Apollo, and Artemis V scheduled for late 2028 to begin a campaign of yearly landings directed at developing a permanent base.

Core infrastructure includes the Space Launch System rocket, the Orion spacecraft, and the Human Landing System, which is being developed by private companies under contract. International collaboration is governed by the Artemis Accords. The program has faced repeated delays in its early stages, with Orion’s first SLS launch originally scheduled for 2016 before finally flying in 2022.

Technical Hurdles of Competing Lander Designs

NASA has awarded multibillion-dollar contracts to two competing companies to develop Human Landing Systems: SpaceX and Blue Origin. The two designs approach the challenge of lunar descent from fundamentally different architectural philosophies. SpaceX intends to use its Starship vehicle, a two-part launch system comprising the Super Heavy rocket booster and the upper Starship spacecraft. This vehicle, which recently completed its first orbital test flight, is 171 feet tall and packed with six rocket engines. Notably, the Starship spacecraft would serve a dual role as both the lunar lander and the upper stage of the rocket itself—a configuration without precedent in the history of spaceflight.

Blue Origin’s offering, Blue Moon Mark 2, takes a more traditional approach. The vehicle, standing 52 feet tall, is designed to launch inside the cargo bay of Blue Origin’s New Glenn rocket and bears a visual resemblance to a scaled-up version of NASA’s Apollo-era landers. Blue Origin had intended to launch a scaled-down cargo version, Blue Moon Mark 1, in the current year, though that flight has not yet occurred. Neither vehicle has yet completed a test flight in the configuration required for the Artemis III mission.

Complexity of the 2027 Test Mission Architecture

The Artemis III test mission, scheduled for late 2027, is described by NASA as “likely the most complicated launch campaign ever undertaken.” The 14-day mission profile requires the launch of three massive rockets and multiple docking and undocking operations between the crewed Orion spacecraft and the experimental landing vehicles in low-Earth orbit. This represents a significant increase in mission complexity compared to previous Artemis flights.

The mission architecture demands that Orion, launched atop NASA’s Space Launch System, rendezvous with landers from both SpaceX and Blue Origin while in low-Earth orbit, at an altitude of only a few hundred miles—far closer to Earth than the Moon itself, which sits 238,855 miles away. The test will evaluate which lander design NASA might select for future surface missions. NASA Administrator Jared Isaacman has emphasized that the accelerated timeline leaves no room for delay, stating that when a schedule is broken, personnel will “roll up their sleeves and solve problems” rather than convene committees.

Implications for the 2028 Crewed Landing

The outcomes of the Artemis III test mission will directly influence the schedule for Artemis IV, currently targeted for early 2028 and planned as the first crewed lunar landing since Apollo. Success in the 2027 orbital tests is viewed as a prerequisite for landing astronauts on the surface. Following Artemis IV, Artemis V is scheduled for no earlier than late 2028 and will mark the beginning of a campaign of yearly landings intended to develop a permanent lunar base, a step toward eventual human missions to Mars.

NASA’s acceleration of the testing schedule reflects the agency’s commitment to meeting the 2028 deadline, a target set against the backdrop of the program’s history of delays. The competing designs from SpaceX and Blue Origin provide NASA with options, but the technical challenges of integrating these vehicles with the Orion spacecraft and the SLS rocket in a tight timeline remain significant. The coming year will determine whether the agency can bridge the gap between the planned 2027 test and the first crewed landing since 1972.