Professor Emerita University of California, Santa Cruz
1972–1977 Assistant Professor/Assistant Astronomer Lick Observatory, University of California, Santa Cruz
1977–1979 Associate Professor/Associate Astronomer Lick Observatory, University of California, Santa Cruz
1979– Professor/Astronomer Lick Observatory, University of California, Santa Cruz
1996– University Professor, University of California
Sabbatical leave, Miller Visiting Professor, University of California, Berkeley (01/01/2005–06/30/2005)
1971 Carnegie Institution Pre-Doctoral Fellow
1982 Phillips Visitor, Haverford College
1986 Director’s Distinguished Lecturer, Lawrence Livermore Laboratory
1987 Tetelman Fellow, Yale University
1987 Carnegie Lecturer, Carnegie Institution of Washington
1990 Feshbach Lecturer, Physics Department, Massachusetts Institute of Technology
1990 Faculty Research Lecturer, University of California, Santa Cruz
1992 Marker Lecturer, Astronomy Department, Pennsylvania State University
1992 Bunyan Lecturer, Physics Department, Stanford University
1992 Tomkins Lecturer, Department of Biochemistry, University of California, SanFrancisco
1994 Mohler Lecturer, Physics Department, University of Michigan
1997 Delphasus Lecturer, University of California, Santa Cruz
1999 Millenium Lecturer, Hebrew University of Jerusalem
2003 Fellow, Institute for Advanced Studies, Hebrew University of Jerusalem
2004 Cecilia Payne-Gaposchkin Lecturer, Harvard College Observatory, Harvard University
2004 Halley Lecturer, Astronomy Department, Oxford University
2005 Miller Visiting Professor, University of California, Berkeley
2005 Sackler Lecturer, Department of Physics, Princeton University