Human Landing System
The Human Landing System (HLS) is a spacecraft component designed to transport astronauts from lunar orbit to the Moon’s surface and back as part of NASA’s Artemis program. The HLS operates within the broader Artemis architecture alongside the Space Launch System (SLS) and the Orion spacecraft, collectively enabling crewed lunar missions. Unlike Artemis II, which is planned as an uncrewed lunar flyby, the HLS represents a critical element for achieving the program’s goal of landing astronauts on the Moon during Artemis III.
Technical Architecture
The HLS functions as a descent and ascent vehicle, receiving crew delivered to lunar orbit by the Orion spacecraft. The system must complete two primary functions: carrying astronauts safely from orbit to the lunar surface and returning them to rendezvous with Orion for the return to Earth. NASA selected commercial providers to develop competing HLS designs, with the goal of creating reliable, reusable systems for multiple lunar missions.
Artemis III Readiness
The readiness of the HLS for Artemis III depends on concurrent development of the SLS rocket and Orion spacecraft. Testing and validation of the HLS design, along with its integration with other Artemis components, must proceed on schedule to meet mission timelines. Technical challenges and budget considerations have influenced the program’s development pace, with ongoing assessments of whether the full Artemis architecture can be ready for the planned crewed lunar landing mission.