Former Chairman, ISRO. K. Radhakrishnan is a Communist Party of India (Marxist) politician from Thrissur and a former member of the Kerala Legislative Assembly from Chelakkara Assembly Constituency.He was the minister of Youth Affairs & SC-ST Affairs in the third E. K. Nayanar ministry from 1996 to 2001 and also the speaker of Kerala legislative assembly from 2006 to 2011. Dr. K. Radhakrishnan was the Chairman of Space Commission and Secretary of Department of Space from 2009 to 2014, driving the synergy of 16,000 strong "Team ISRO" to execute 37 space missions, an unprecedented accomplishment in its history. Speaker Bio. Dr. K. Radhakrishnan.