# Six people spent 8 months inside a mock Mars dome on Mauna Loa and used a virtual psychologist to work through 13 stressors and 9 crew problems, testing private support for missions too distant for real-time help

> Six volunteers lived for eight months inside the HI-SEAS habitat on the slopes of Mauna Loa, following the kind of isolation rules a Mars crew might face. In that setting, a study in Aerospace Medicine and Human Performance tracked how they used...

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Published: 2026-08-06T03:30:03+00:00
Categories: Explainer, Humans

![The volcanic summit landscape of Mauna Kea in Hawaii at sunset](https://www.argo.net/wp-content/uploads/2026/08/Mars_habitat_dome_Hawaii_volcano.jpg)

**Six volunteers** lived for eight months inside the **HI-SEAS** habitat on the slopes of Mauna Loa, following the kind of isolation rules a Mars crew might face. In that setting, a study in [Aerospace Medicine and Human Performance](https://pubmed.ncbi.nlm.nih.gov/27779949/) tracked how they used a computer program built to help with conflict, stress and low mood. The crew logged **13 stressors** and worked through **9 crew problems**, giving researchers a close look at what private psychological support might look like when a live therapist is not immediately available.

The program was called the [**Virtual Space Station**](https://doi.org/10.3357/AMHP.4676.2016). It was designed for long missions where communication delays and stigma could keep astronauts from seeking help. The HI-SEAS III expedition made that question practical rather than theoretical, because the six crew members lived in a small dome, left only for simulated spacewalks and worked under a 20-minute communication delay each way with the outside world.

## The habitat made privacy and timing part of the experiment

The [HI-SEAS program](https://moonbasealliance.com/hi-seas) placed crews in an isolated, confined and extreme environment that was meant to resemble the social side of a Mars mission more than the physical landscape alone. The dome covered about 135.8 square meters and each private sleeping area was about 4.2 square meters, according to the paper. Such cramped personal space can amplify minor stress when people live in close quarters for months.

Communication rules added another pressure. Messages traveling in or out were delayed by 20 minutes each way to mimic the lag between Earth and Mars. A crew member could not simply call a psychologist and get immediate guidance during an argument, a stressful work period or a low mood. That delay is one reason the researchers focused on **autonomous behavioral health** tools that people could use on their own schedule.

The study team also chose a crew that resembled the kind of applicants space agencies want. The six participants, three men and three women, were selected with science or engineering backgrounds, screening measures and interviews. Before the mission they completed a cohesion exercise, which gave the researchers a better starting point for judging whether later problems came from the environment, the work, the group dynamic or the support tools themselves.

## The virtual psychologist was really three different tools

The Virtual Space Station was not a single chat window. It was a package of three structured modules for **conflict management**, **stress management** and depression treatment. The conflict material used cognitive behavioral ideas to help users slow down, examine assumptions and look for workable responses. The stress program trained users across six sessions in ways to handle the thoughts, feelings and actions that build around strain.

The depression module worked differently. It used a problem-solving treatment approach and gave tailored feedback through branching algorithms after a user entered information. In the paper, the researchers describe it as a computer-delivered stand-in for some of the practical steps a clinician would normally guide. Within this study, it came closest to a **virtual psychologist**, because the software responded to what the user entered instead of only presenting static lessons.

Earlier work had already shown that pieces of this system could be usable. The paper notes prior astronaut-population testing for the conflict material, stress-management trial results and clinical evidence behind the depression content. HI-SEAS added a harder question. A program can look credible in a clinic or training room, yet still fall flat inside a cramped mission analog where fatigue, interpersonal tension and workload arrive at the same time.

## The crew found more use in stress and conflict help than in mood treatment

The strongest signal in the results came from how differently the modules were received. The **conflict and stress modules** were rated as highly acceptable, with the paper reporting a 1.8 score on a 7-point Likert scale where lower values meant stronger acceptance. Crew members used the material both in the intended way and in unplanned ways, which is often a good sign for a practical support tool. A rigid system tends to be ignored when life becomes messy.

Stress content seems to have been especially useful because it matched everyday mission strain without forcing crew members to label themselves as ill. The paper says relaxation exercises such as breathing and guided muscle relaxation were among the most popular features and several crew members reported that those techniques helped them relax and sleep better. In a long mission, a small skill that helps someone sleep can shape performance the next day, the next week and the social tone of the whole habitat.

The depression module drew a weaker response even though the underlying ideas were clinically grounded. Four crew members completed the first two sessions as requested, one completed only one session and one completed all six sessions voluntarily. Three crew members reported feeling depressed during the mission, yet the paper says the module was the least accepted overall. Some participants found it cumbersome, some felt the repeated references to depression did not fit their own state and one person who may have needed it most did not want to use it.

## The numbers 13 and 9 show what people actually carried into the software

The headline numbers are small, but they are concrete. Using the problem-solving steps inside the depression program, crew members identified a total of nine problems. Across the broader system, they also logged thirteen stressors. Those entries give the study weight because they show the software was not sitting idle on a mission laptop. People entered real concerns while living in confinement, which means the program crossed the hardest threshold for any self-guided support tool: it was used during actual stress.

The study does not present the mission as a mental health crisis. Instead, it shows a slow accumulation of familiar pressures inside an unfamiliar setting. Crew members reported behavioral health issues common to isolated environments and they judged parts of the system according to whether the exercises matched what they were facing at that moment. Timing became a major lesson. Several participants used the conflict material early in the mission, while many of the more serious interpersonal strains appeared later, when some had already forgotten parts of the content.

The researchers also found that people bent the tool to purposes beyond its original script. One crew member used the depression material to think about how to help another person rather than to treat personal low mood. Others wanted the behavioral support team on the ground to use the program as a shared reference point. That suggests the software may work best as a bridge between private reflection and later human support, rather than as a complete replacement for clinicians.

## A Mars mission will probably need software, but not software alone

The paper argues that confidential, autonomous support will need to be part of [long-duration spaceflight planning](https://techport.nasa.gov/projects/34479). The communication delay and the social reality of confinement explain why. A crew on the way to Mars cannot depend on immediate therapy sessions from Earth and some astronauts may hesitate to raise problems openly inside a six-person team. Private tools can lower that barrier and preserve some mental-health support even when contact is slow.

The same paper also makes the limits clear. HI-SEAS III had only six participants and a Mars analog in Hawaii still differs from an actual mission in risk, motivation and consequences. The researchers say it is not known how closely the attitudes and outlook of the HI-SEAS crew match those of a future Mars crew. They also report technical bugs, requests for better examples, interest in mobile access and repeated calls for some live clinician input, especially around the depression material.

The most useful lesson may be that **space psychology** support should be layered. Self-guided exercises helped with stress and conflict. Private logging let people name problems they might not have voiced immediately. Human feedback still looked valuable when mood problems became more serious or more specific. For deep-space crews, that points toward a mixed system: software that can coach a person through common strain on the spot, with delayed professional guidance added when the mission schedule and communication window allow it.