Homi Jehangir Bhabha, known for his pioneering work in the fields of atomic energy and quantum theory, died on January 24, 1966 at the age of 56. He had a distinguished career as a nuclear physicist, working on various missions of the Indian Atomic Energy program for more than two decades. He is well-remembered for his research contributions to the physics of cosmic radiation which led to the development of the nuclear reactor, and for his work in the area of cosmic ray showers. In addition, Bhabha is credited with the development of the Three-Stage Nuclear Program, which proposed the use of uranium and plutonium as fuel for the generation of nuclear energy. In recognition of his pioneering contributions, he was awarded several prestigious awards in India and abroad, including the Padma Bhushan in 1954 and the Adams Prize in 1965. He left an indelible mark on the scientific world that will not be forgotten.