Gamow solved alpha decay through quantum tunneling matching Geiger-Nuttall law. Gamow advocated Lemaître's Big Bang using Friedmann's non-static universe solutions. Gamow calculated early universe element production via nucleosynthesis. Gamow predicted cosmic microwave background radiation existence. Gamow derived primordial galaxy mass and radius from physical constants. Gamow proposed liquid drop model of atomic nucleus. Gamow developed Gamow-Teller selection rule for beta decay. Gamow defected Soviet Union via kayak attempts and Solvay Conference. Gamow founded RNA Tie Club advancing genetic code theories. Gamow wrote popular science books like Mr Tompkins series still in print.