India’s ambitious space programme is facing an unexpected challenge as more than 100 scientists have either resigned or opted for voluntary retirement from the Indian Space Research Organisation (Isro) in recent months. The growing exodus has prompted the Department of Space (DoS) to tighten rules governing resignations, particularly for scientists involved in flagship missions such as Gaganyaan.
Industry experts say the rapid growth of India’s private space sector is one of the primary reasons behind the departures. Since the government opened the space sector to private participation in 2020, startups such as Skyroot Aerospace, Agnikul Cosmos, Pixxel, Bellatrix Aerospace, Dhruva Space and Digantara have emerged as attractive employers for experienced scientists.
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These companies offer significantly higher salaries, stock options, quicker career progression and greater flexibility than traditional government organisations. Scientists are also drawn to opportunities where innovative ideas can be translated into products more quickly, while leadership roles are available at earlier stages of their careers.
Apart from better financial incentives, delays in major Isro missions have also contributed to growing dissatisfaction. Projects including the Gaganyaan G1 test flight, SSLV-L1, GSLV-F17 and PSLV-N1 have witnessed schedule slippages, while discussions within the organisation point to increasingly centralised decision-making slowing operational processes.
Experts believe Isro could benefit from adopting a hybrid employment model similar to agencies such as NASA and the European Space Agency, where permanent employees work alongside contractors and project-based specialists. Such a structure would provide greater flexibility while retaining institutional expertise.
Although the departing scientists represent only a small portion of Isro’s workforce of over 14,600 employees, many possess years of specialised experience gained through missions like Chandrayaan-3, SpaDeX and Gaganyaan. Replacing such expertise will take years, making talent retention a crucial challenge as India’s space ambitions continue to expand.
