Raja Ramanna was an influential Indian physicist and a key figure in the development of India's nuclear program. Born on January 28, 1925, he played a significant role in the country's first nuclear test, known as Smiling Buddha, conducted in 1974. His work in nuclear science helped establish India as a nuclear power. In addition to his scientific contributions, Ramanna served as the director of the Bhabha Atomic Research Centre and held various important positions in the Indian government. He was also involved in promoting science education and research in India, leaving a lasting legacy in the field of nuclear physics.