India's third mission to the moon - Chandrayaan-3 - will take off today afternoon at 2:35 pm as the country aims to achieve what its predecessor could not - land softly on the lunar surface and explore it with a rover. We discuss the lessons ISRO has learnt with Pallav Bagla, Divyanshu Poddar, Founder of Rocketeers and Ratan Srivastava, Independent Consultant on Aerospace.