NASA is seeking four volunteers to participate in a one-year simulated mission to Mars starting no earlier than August 2027. The project, which combines the HERA and CHAPEA research programs, aims to test human endurance and operational efficiency in confined, resource-limited environments to prepare for future interplanetary travel.
The Hybrid Simulation: HERA and CHAPEA
The upcoming mission represents a strategic evolution in how NASA prepares for deep-space exploration. By merging two distinct research platforms—HERA and CHAPEA—the agency intends to create a more comprehensive testing ground. Historically, HERA focused on the psychological and operational constraints of a 60-square-meter spacecraft environment, while CHAPEA utilized a larger, 158-square-meter facility to simulate surface-based living conditions.
The integrated facility will feature private quarters, a communal workspace, medical facilities, and a dedicated area for food preparation and crop cultivation. This simulation is designed to mimic the isolation of a year-long interplanetary voyage and the subsequent operational rigors of working on a planetary surface, including the execution of simulated spacewalks.
Eligibility and Selection Criteria
NASA is not opening this call to the general public without strict requirements. The mission demands individuals who mirror the professional and physical profiles of actual astronauts. Candidates must be United States citizens or hold a green card, must be between 30 and 55 years old, and must not exceed 1.88 meters in height. Proficiency in English is required, as is a background in STEM fields—specifically engineering, mathematics, or biological and physical sciences.
- Professional Background: Advanced degrees in engineering, physical or biological sciences, or mathematics are preferred.
- Health Standards: Volunteers must not require special dietary accommodations or sleep aids and must not be prone to sleepwalking.
- Commitment: The selection process includes rigorous physical and psychological testing, followed by a two-month pre- and post-mission phase dedicated to data collection.
Strategic Objectives and the Lunar “Wish List”
While this mission focuses on the human element of exploration, it is part of a broader, multi-phase strategy to establish a permanent human presence in space. According to reporting on the agency’s broader roadmap, the Moon serves as the primary testing laboratory for technology required for Mars. NASA has identified a lista de deseos
(wish list) for private industry partners, outlining critical technological gaps that must be closed to ensure long-term sustainability.
These critical areas include the development of nuclear reactors for space, autonomous operations that limit the need for constant Earth-based support, and the creation of reliable space-based supply chains.
| Phase | Objective | Logistical Scope |
|---|---|---|
| Phase 1 | Validation and initial landing | 25 launches, 21 landings |
| Phase 2 | Infrastructure setup | 27 launches, 24 landings |
| Phase 3 | Continuous human presence | 29 launches, 28 landings |
Operational Challenges in Deep Space
The difficulty of these missions cannot be overstated. The lunar South Pole, a primary target for future operations, presents extreme thermal and lighting challenges. The terrain is characterized by deep, shadowed craters that may contain water ice, adjacent to elevated peaks that receive enough sunlight to power solar arrays. This duality is essential for sustaining a base, but it creates a harsh working environment for crews.
Because the sun remains low on the horizon, shadows are elongated, complicating navigation and energy generation. By testing these conditions on Earth, NASA aims to refine the equipment and protocols necessary to protect future explorers from the abrasive dust and cold of the lunar and Martian environments.
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