Bengaluru: Indian Space Research Organisation (ISRO) Chairman V Narayanan on June 27, Saturday said that the recent propulsion-related testing marked a “major achievement and milestone”, while stressing that the Gaganyaan mission remains highly technology-intensive and will involve multiple uncrewed missions before human flight. With the successful testing of the new semi-cryogenic rocket engine, India has inched a step closer to its Gaganyan ambition. It also marks another pivotal milestone in