ISRO’s Gyanex-1 Ignites Ground-Based Astronaut Readiness for Gaganyaan

BENGALURU: In a landmark step toward India’s first human spaceflight, the Indian Space Research Organisation (ISRO) has successfully completed the first Gaganyaan Analog Experiment, called Gyanex-1, aimed at preparing astronauts for the 2027 Gaganyaan mission.

Simulating Space on Earth

The 10-day trial, held in July 2025 at Bengaluru, placed Group Captain Angad Pratap—a decorated test pilot and one of the shortlisted Gaganyaan astronaut candidates—inside a specially designed isolation facility with two teammates. The habitat recreated spacecraft-like conditions such as confinement, resource restrictions, strict operational routines, and delayed communication with mission control, closely simulating life in orbit apart from microgravity.

The crew successfully carried out 11 scientific experiments covering biomedical monitoring, environmental control, communications, space psychology, and resource management. This hands-on schedule mirrored the types of activities astronauts will conduct during the real orbital mission.

Key Learnings

ISRO scientists closely monitored crew adaptability, endurance, decision-making, and teamwork. The confined environment highlighted how astronauts respond to stress, limited personal space, and repetitive routines. Even food supplies were designed to replicate space mission rations prepared with support from DRDO.

Another crucial aspect tested was communication discipline. Engineers introduced deliberate delays and simulated blackouts to mimic space-to-Earth transmissions, refining contingency procedures and resilience training. Psychologists also collected valuable insights into mood, cognitive performance, and coping strategies—factors that are vital for long-duration missions.

A Series of Trials Ahead

Gyanex-1 is the beginning of a series of progressively longer and more complex simulations planned over the next two years. Future runs will last several weeks and involve emergency drills, advanced science tasks, and extended blackout scenarios, giving ISRO deeper understanding of human performance in extreme conditions.

Parallel to this, ISRO is also conducting analogue missions in Ladakh’s high-altitude Tso Kar Valley, replicating Moon- and Mars-like environments to study human adaptation. At the same time, engineering teams are validating the Service Module Propulsion System, Environmental Control and Life Support System (ECLSS), and crew module safety features, ensuring that both hardware and astronauts are equally mission-ready.

Building India’s Human Spaceflight Future

Before astronauts fly in 2027, the uncrewed Gaganyaan-1 mission—featuring the humanoid robot Vyommitra—is scheduled for December 2025. These incremental steps are part of a long-term roadmap that includes the launch of India’s own space station, the Bharatiya Antariksh Station, planned around 2035.

Gyanex-1 demonstrates that India is not just focusing on rockets and spacecraft but also ensuring that its astronauts are physically, mentally, and operationally prepared for the challenges of space. This fusion of technology and human resilience is what will ultimately make Gaganyaan a success.