K. Radhakrishnan is an Indian space scientist and engineer known for his significant contributions to the Indian Space Research Organisation (ISRO). He served as the chairman of ISRO from 2009 to 2014, overseeing major projects like the Mars Orbiter Mission, which made India the first Asian nation to reach Martian orbit. Radhakrishnan has also held prominent positions in various scientific organizations and has been involved in numerous satellite launches and space missions. His leadership has been instrumental in advancing India's capabilities in space technology and exploration, making him a key figure in the country's scientific community.