Answer
The answer is Nambi Narayanan, a renowned Indian scientist and aerospace engineer who was falsely accused of espionage in the 1990s. Madhavan, a celebrated actor, portrayed Nambi Narayanan in the critically acclaimed biopic titled "Rocketry: The Nambi Effect," released in 2022. The film sheds light on Nambi Narayanan's life, his contributions to India's space program, and the subsequent events that led to his exoneration.