B.S., University of Toledo, 1953; Ph.D., Harvard University, 1963. Associate Professor, Caltech, 1967-71; Professor, 1971-97; Professor Emeritus, 1997-. Staff Member, Owens Valley Radio Observatory, 1967-.
The study of planetary surfaces and atmospheres, particularly from the standpoint of radio and radar astronomy, through the use of microwave spectroscopy of atmospheric gases and mm-wavelength studies of Saturn's rings and satellites of the major planets.
