Abstract
The idea of existence of extra-terrestrial intelligence is intriguing. Our universe is about 13.8 billion years old; the Akaash Ganga (our galaxy, the Milky Way) is about 13.6 billion years old [1]. By a well-considered estimate, the number of habitable planets in our galaxy alone is approximately 300 million [2]. It is therefore counter-intuitive to suspect that our civilization is the only one in the entire universe. On the other hand, no evidence of alien life has yet been found. This dilemma is often referred to as the 'Fermi Paradox', after Enrico Fermi. The Italian- American physicist Fermi is best known for his contribution to the Manhattan project; for the Chicago Pile-1, which was the world’s first nuclear reactor. Fermi never published any work related to the paradox named after him, and the conundrum had troubled man long before Fermi. Fermi had however raised disquiet about it in a casual chat with his colleagues which resulted in his name getting associated with it. The Fermi paradox is the contradiction between the scale of the universe and the lack of evidence for intelligence elsewhere in the cosmos [3]. In this article, we attempt a briefly overview of the trepidation cause by the Fermi paradox.