NASA is launching a major experiment to answer the fundamental question of future Mars missions: can a human being survive nearly a year in confinement millions of miles from Earth? Volunteer recruitment is already open, and the mission is scheduled to begin no earlier than August 2027.
Simulating the Impossible
Known as the "Luna-Mars Analog," the experiment will take place at the Lyndon B. Johnson Space Center in Houston. This is not merely another trial; it is a simulation designed to replicate, as closely as possible, the conditions that the first Red Planet explorers will face.
Participants will spend approximately one year in total isolation, rotating between two specialized modules. The Human Exploration Research Analog (HERA) will serve as a surrogate for an interplanetary spacecraft where the crew "undertakes" a multi-month transit. Meanwhile, the Crew Health and Performance Exploration Analog (CHAPEA) will simulate a base on the surface of Mars or the Moon.
The Astronaut's Daily Routine
Participants will be required to follow a schedule that is nearly identical to the routine of real astronauts. The program includes several key activities:
- Scientific Research – conducting experiments while managing limited resources
- Equipment Maintenance – repairing and supporting life-support systems
- Simulated Surface Missions – "spacewalks" across the Martian landscape
- Rover Expeditions – journeys to remote research locations
- Augmented Reality Tasks – utilizing AR systems to complete mission objectives
Specific emphasis is placed on psychological factors, including prolonged confinement, heavy workloads, restricted social interaction, and communication delays that mimic the actual distance to Mars, which can be as long as 20 minutes each way.
A Stringent Selection Process
The eligibility requirements for candidates are consistent with NASA’s standards for professional astronauts:
- Age: Between 30 and 55 years old
- Height: No taller than 188 cm, due to the physical dimensions of the modules
- Citizenship: U.S. citizens or permanent residents
- Health: Excellent physical and mental condition
- Education: A graduate degree in a STEM field (science, technology, engineering, or mathematics)
Prior to the mission, applicants will undergo a multi-stage selection process that includes rigorous medical and psychological testing. The agency will evaluate not only professional skills but also teamwork, stress resilience, and adaptability.
Lessons from Mars-500
NASA is not the first to explore these experimental conditions. The most extensive project of its kind was the "Mars-500" study, organized by the Russian Institute of Biomedical Problems of the RAS with the participation of the European Space Agency.
In 2010, six volunteers—comprising three Russians, a Frenchman, a Chinese citizen, and an Italian—were sealed inside a specialized facility in Moscow for 520 days, representing the theoretical length of a full round-trip mission to Mars.
The results proved to be quite revealing:
- Physical activity levels among participants declined as the study progressed
- Total time dedicated to sleep and rest gradually increased
- Most participants experienced disruptions in sleep patterns, circadian rhythms, and focus
- Responses varied significantly between individuals, with some coping better than others
Concluding on November 4, 2011, the experiment demonstrated that a small group is fundamentally capable of remaining functional during nearly 18 months of isolation. However, success depends on careful crew selection, appropriate lighting, a structured routine, and consistent physical exercise.
What NASA Aims to Evaluate
Unlike the Mars-500 project, the American experiment will focus on testing technology in addition to human behavioral factors:
1. Equipment and life-support systems—identifying vulnerabilities before an actual flight; 2. Interaction protocols—evaluating how teams make decisions under pressure; 3. Communication technologies—working with delays and limited channels; 4. Psychological support—developing methods to maintain high crew morale.
NASA experts will provide around-the-clock monitoring of the participants' physical and mental states, their productivity, team interactions, and decision-making abilities in critical scenarios.
Why This is Currently Essential
The experiment is directly linked to two highly ambitious space programs:
Artemis — the initiative to return humans to the Moon and establish a long-term lunar base by the end of the decade. The Moon is being used as a proving ground to refine technologies before the eventual leap to Mars.
Manned Mission to Mars — currently targeted for the 2030s. The distance to the Red Planet ranges from 55 to 400 million kilometers depending on planetary positions, with a one-way trip taking six to nine months.
NASA officials state that resolving these issues on Earth is far more cost-effective and safer than doing so during an actual expedition. Successful solutions developed here can later be applied to both lunar settlements and interplanetary spacecraft.
Competing Methodologies
While NASA follows a path of systematic preparation and testing, private enterprises are proposing more radical scenarios.
Elon Musk’s SpaceX is championing the creation of a permanent and eventually self-sustaining settlement on Mars rather than a one-time expedition. However, these plans remain far from implementation. In February 2026, Musk stated that SpaceX’s immediate priority would be the construction of a lunar settlement, as it is easier and faster to deliver people and cargo there. While the Martian city project has not been canceled, it has been pushed to a later timeframe.
How to Apply
Applications can be submitted through the official NASA website. The agency emphasizes that this is not just an adventure, but a serious scientific undertaking that will determine the future of human expansion into space.
For those who dream of Mars but are not prepared to wait until 2027, an alternative exists: NASA’s astronaut selection program for actual missions. The most recent intake was in 2024, with the next cycle expected no earlier than 2028.
Context: This NASA experiment is slated to begin no earlier than August 2027 and will last approximately one year. It is one of the most ambitious preparation projects for manned missions beyond Earth’s orbit. The data collected will be used to develop the lunar base for the Artemis program and future Mars flights.
Sources: NASA, Institute of Biomedical Problems of the RAS, European Space Agency, SpaceX
