Education
Bachelor of Science, University College, Oxford, England Doctor of Philosophy, Balliol College, Oxford.
Bachelor of Science, University College, Oxford, England Doctor of Philosophy, Balliol College, Oxford.
Research fellow, California Institute Technology, Pasadena research fellow, Mount Wilson Palomar Observatories with department astronomy, University Texas, Austin, 1969; professor, University Texas, Austin, since 1974; now Isabel McCutcheon Harte Centennial professor astronomy, University Texas, Austin.
Fellow Royal Astronomical Society. Member American Astronomical Society, International Astronomical Union.