AB, Harvard University, 1929. AM, Harvard University, 1930. Doctor of Philosophy, Harvard University, 1937.
Doctor of Science (honorary), University Arizona, 1987.
Engaged in real estate and investments, 1930-1934;
National Research fellow, 1937-1939;
associate professor, Yerkes Observatory, University of Chicago, 1939-1948;
research associate, McDonald Observatory, University Texas, 1939-1948;
military research under, Office of Scientific Research and Development (optical design), Yerkes Observatory, 1942-1945;
professor, California Institute Technology, 1948-1970;
Lee A. DuBridge professor astrophysics, California Institute Technology, 1971-1981;
professor emeritus, California Institute Technology, since 1981. Also staff member Hale Observatory, 1949-1979, Palomar Observatory, since 1979, Executive officer for astronomy, 1949-1972. Chairman of faculty of institute, 1965-1967.
Member observatory committee Hale Observatories. Member of staff Owens Valley Radio Observatory. Consultant, also committee member National Aeronautics and Space Administration and National Science Foundation on astronomy and radio astronomy.
Chairman.astronomy survey National Academy Sciences, 1969-1972. Special consultant National Aeronautics and Space Administration, 1978-1983. Visiting professor Princeton, 1955, Institute for Advanced Studies, 1964, 68-69, U. Hawaii, 1979, Niels Bohr Institute, 1979, NORDITA, Copenhagen, 1972,U. Delaware, 1981.
Lecturer in field; consultant Science Advisory Board United States Air Force. Former director Itek Corporation, Hycon Corporation. Chairman, Board Of Directors Association Universities Research in Astronomy, 1974-1977.
Board overseers Harvard, 1965-1971. Life trustee PacificAsia Museum.
Member Royal Astronomical Society (associate. Gold medal 1975), Astronomical Society Pacific (Bruce medalist 1971), American Astronomical Society (councillor 1947-1950, vice president 1955-1957, Russell lecturer 1970), Internat Astronomical Union (president commission on spectroscopy 1952-1958, chairman United States delegation 1969-1972), National Academy Sciences (councillor, section Chairman of Commission on science public policy), American Philosophical Society, American Academy Arts and Sciences, Athenaeum (Pasadena), Phi Beta Kappa.
Married Naomi Kitay, January 7, 1934. Children: George Samuel, Peter Daniel.