NASA Outlines Artemis III and IV Lunar Trajectories

Mission Architecture: Artemis III and IV

NASA has released detailed operational plans for Artemis III and IV, targeting launches in 2027 and 2028. According to Payload, the agency remains confident in a 2028 crewed lunar return, citing aggressive vendor oversight and hardware acceleration to counter geopolitical competition.

Artemis III: LEO Validation
The 2027 mission is framed as a 14-to-17-day LEO test sequence. Operations begin with an uncrewed Blue Origin New Glenn launch carrying the Blue Moon test lander. This is followed by a crewed SLS/Orion launch. The mission involves a Day 3 docking between Orion and Blue Moon to validate life support and environmental controls. On Day 6, SpaceX’s Starship will launch for a Day 8 docking demonstration with the crewed Orion. Notably, NASA officials did not specify why no crew transfer will occur during the Starship segment.

Artemis IV: The Surface Objective
For the 2028 lunar landing, NASA is maintaining two parallel tracks involving SpaceX’s Starship HLS and Blue Origin’s Blue Moon Mark 2. While neither vendor has been finalized for the primary landing role, both are progressing toward critical milestones. SpaceX is scheduled for an orbital propellant transfer demo in early 2027, while Blue Origin must return New Glenn to flight following its May launchpad failure.

The Competitive Drive
NASA Administrator Jared Isaacman emphasized that the schedule is driven by a "new space race" with China. Despite Artemis III being approximately 90 days behind schedule, NASA is applying direct pressure on suppliers to shrink hardware requirements and streamline supply chains. The agency maintains that multiple successful test flights for both Starship and New Glenn will occur before Artemis III, providing the necessary safety data for crewed operations.