R Madhavan's much anticipated feature called Rocketry: The Nambi Effect, was screened at the Marche du Festival at the 75th annual Cannes Film Festival. The film is based on the life of Padma Bhushan-awardee ISRO scientist and aerospace engineer, Nambi Narayanan. Madhavan is starring in, co-producing and also making his directorial debut with Rocketry. Here he speaks about his Cannes experience with Rj Stutee.