S Somanath, Chairperson of the Indian Space Research Organisation (ISRO), spoke to NDTV in his most exhaustive candid interaction on Chandrayaan-3, inside ISRO's satellite center in Bengaluru where Chandrayaan was crafted. He explains how the failure of Chandryaan-2 was a hard learning for ISRO and hundreds of tests were done to overcome the debacle. The 20 minutes of terror were converted to 20 minutes of joy.