Avionics expert K Radhakrishnan today took over as the Chairman of the Indian Space Research Organisation (ISRO) from G Madhavan Nair at Thiruvananthapuram. A highly respected scientist with 35 years of experience in ISRO, 60-year-old Radhakrishnan has played a key role in many of the country's space projects, including Chandrayaan-I. <br/>After assuming the charge he said, it is a huge task that has been entrusted on him. Before his elevation as ISRO chief, Radhakrishnan was the Director of Vikram Sarabhai Space Centre.<br/>He joined the organisation in 1973 shortly after graduating in Electronic Engineering. He later pursued MBA from IIM Bangalore and a doctorate from IIT, Kharagpur.<br/>