Covers his family background, upbringing, education at the University of Cambridge, and positions at University of Edinburgh, Imperial College, University of Belfast, Royal Holloway College and University of Sussex. The scientific topics discussed include: the development of Newtonian cosmology, the origins and development of steady-state cosmology; work on theories of the solar system. Also prominently mentioned are: Philip Abelson, Luis Walter Alvarez, Hans Albrecht Bethe, Raymond Thayer Birge, Patrick Maynard Stuart Blackett, Niels Henrik David Bohr, Ira Sprague Bowen, Sydney Chapman, Karl Taylor Compton, Edward Uhler Condon, Charles Galton Darwin, Paul Adrien Maurice Dirac, Kenneth Dodd, Colonel Dudley, Arthur Stanley Eddington, Robley Dunglison Evans, Enrico Fermi, Richard Phillips Feynman, Ralph Howard Fowler, Friedman, Wolfgang Gentner, Thomas Gold, Sterling E. Hendricks, Fred Hoyle, Edwin Powell Hubble, Henry Hulme, James Jeans, W. O. Kermack, Joseph Larmor, Charles Christian Lauritsen, Ernest Orlando Lawrence, George Lemâitre, Milton Stanley Livingston, Howard J. Lucas, Walter Michels, Edward Arthur Milne, Joe Morris, Arthur A. Noyes, J. Robert Oppenheimer, Linus Pauling, Firth Pierce, George Placzek, Harry Hemley Plaskett, Samuel Ruben, Henry Norris Russell, Ryokishi Sagane, Samson, Erwin Schrödinger, Emilio Gino Segrè, George Paget Thomson, Robert Jamison Van de Graaff, Vladimir Iosifovich Veksler, Warren Weaver, Edmund T. Whittaker, Robert Rathbun Wilson, Charles Thomas Zahn; California Institute of Technology, Cambridge Radio Survey, Germany Kriegsmarine, Great Britain Science Research Council, Lawrence Radiation Laboratory, Los Alamos National Laboratory, Massachusetts Institute of Technology Radiation Laboratory, National Institute of Theoretical Astronomy, Princeton University, Proceedings of the Royal Society, Royal Astronomical Society, Universität Göttingen, University of California at Berkeley, University of Edinburgh, and Zeitschrift für Physik.