Simulating Mars isolation at Johnson Space Center
“In a real mission to Mars, the blackout will be an incredibly dangerous period of time that NASA does not have much experience with,” said Matthew Montgomery.
Four engineers concluded a 378-day mission on October 31, 2026, after living inside a 3D-printed habitat at the NASA Johnson Space Center in Houston.
Living within a 158-square-meter habitat
The crew spent over a year isolated in a 158-square-meter facility designed to mimic the conditions of a journey to the red planet. The participants cultivated leafy greens, peppers, and tomatoes to supplement their nutrition and maintain a psychological connection to living plants. Montgomery, who served as the mission’s science lead, noted that these agricultural tasks were essential for both crew morale and food security.
Engineers simulate Martian terrain traversal and geological fieldwork
The engineers conducted simulated spacewalks in a designated area modeled after the Martian surface to test the viability of frequent extravehicular activities. The team performed geological fieldwork, including mineral identification and rock sampling. These exercises aimed to replicate the labor-intensive scientific requirements expected of astronauts during future missions to the Moon and Mars, which NASA targets for the early 2030s.
Managing two weeks of total communication silence
The mission included a 14-day period of intentional signal blockage to simulate the solar interference that prevents radio contact between Earth and Mars. The crew experienced communication delays ranging from 13 to 22 minutes throughout the rest of the simulation. To prepare for the total blackout, Montgomery and his crewmates established strict protocols for safety and daily operations with ground control teams nearly a month in advance.
Preparing for long-duration crew dynamics
The participants focused on how resource constraints and isolation impact physical health, such as muscle and bone mass retention. Before entering the habitat, the crew spent five weeks together, including a winter camping trip in Wyoming that involved navigating a blizzard. Montgomery stated that these shared experiences were vital for maintaining positive team dynamics and minimizing conflict during the year-long confinement.
“Thanks to all the tools we developed, we achieved a very positive team dynamic within the habitat, and conflicts were minimal,” Montgomery said.
Future mission data collection
NASA is now comparing post-mission health data against baseline records taken before the 378-day enclosure. This information will inform the agency’s strategy for human expeditions to the Moon and Mars. Montgomery emphasized that his engineering background proved critical for resolving equipment failures and managing limited resources in a closed environment.
