Nuclear and particle physics, astrophysics and cosmology, genetics - areas of science in which the works of Georgy Antonovich Gamov, one of the largest theoretical physicists of the 20th century, left a bright mark. The brochure tells about the most important scientific achievements of Gamow: the discovery of the quantum nature of alpha decay, the theory of the Big Bang, the clue of the genetic k-da. A short scientific and biographical sketch based on materials from the archives of the USSR and the USA is given...