NASA is recruiting participants for a simulated Moon and Mars mission as part of its Moon and Mars Exploration Analog, or MMEA, program. The agency is looking to choose four primary participants along with two alternates for the effort.

The program will be based at the Lyndon B. Johnson Space Center in Houston, Texas, a major NASA hub with deep ties to human spaceflight. By running the mission on the ground, NASA can study how crews may live and work during future exploration campaigns without leaving Earth.

The idea behind an analog mission is to recreate some of the conditions astronauts could face on long-duration trips. That helps NASA evaluate crew performance, routines, and the practical challenges of confined mission environments tied to lunar and Martian exploration.

The unusual focus on people comfortable with limited social stimulation has drawn attention, reflecting the demands of simulated deep-space living. With four selected participants and two alternates, the MMEA project is another step in NASA’s broader planning for future Moon and Mars missions.