| May 2008 |
Harvard-Smithsonian Center for Astrophysics |
Cambridge, MA |
| March 2005 |
National Science Foundation |
Arlington, VA |
| January 2005 |
MIT Lincoln Labs |
Lexington, MA |
| January 2005 |
University of Washington |
Seattle, WA |
| December 2004 |
Duke University |
Durham, NC |
| November 2004 |
NASA Langley Research Center |
Hampton, VA |
| May 2004 |
Stanford Linear Accelerator Center |
Stanford, CA |
| July 2003 |
Brookhaven Laboratories |
Long Island, NY |
| December 2002 |
Princeton University. Joint Sponsors: Woodrow Wilson School, Mechanical & Aerospace Engineering, Astrophysics |
Princeton, NJ |
| October 2002 |
Pappalardo Lecture, Massachusetts Institute of Technology, Department of Physics |
Cambridge, MA |
| March 2002 |
Penn State, Department of Astrophysics |
State College, PA |
| November 2000 |
Caltech, Department of Astronomy |
Pasadena, CA |
| September 2000 |
Space Telescope Science Institute |
Baltimore, MD |
| April 2000 |
University of Toronto & CITA |
Toronto, Canada |
| April 2000 |
Rutgers University, Department of Astronomy |
New Brunswick, NJ |
| January 1998 |
American Museum of Natural History, Dept. of Earth & Planetary Sciences |
New York City |
| December 1997 |
Swarthmore College, Department of Physics & Astronomy |
Swarthmore, PA |
| April 1996 |
Augsburg College, Department of Physics |
Minneapolis, MN |
| May 1995 |
New York Academy of Sciences |
New York |
| February 1994 |
Lehigh University, Department of Physics |
Bethlehem, PA |
| December 1993 |
University of California, Department of Astronomy |
Santa Cruz, CA |
| October 1993 |
Princeton Plasma Physics Laboratories |
Princeton, NJ |
| October 1993 |
Ohio Sate University, Department of Astronomy |
Columbus, OH |
| June 1993 |
University of Washington, Department of Astronomy |
Seattle, WA |
| April 1993 |
University of Maryland, Department of Astronomy |
College Park, MD |
| March 1993 |
Rutgers University, Department of Astronomy |
New Brunswick, NJ |
| October 1992 |
University of Virginia, Department of Astronomy |
Charlottesville, VA |
| October 1992 |
National Radio Astronomy Observatory |
Charlottesville, VA |
| September 1992 |
University of Massachusetts, Department of Geology |
Amherst, MA |
| March 1992 |
York College, Department of Natural Sciences |
Queens, New York |
| May 1991 |
Cerro Tololo Inter-American Observatory |
La Serena, Chile |
| September 1990 |
Osservatorio Astronomico di Capadimonte. Funded by: Academia Nazionale di Science Lettere e Arti. |
Naples, Italy |
| September 1988 |
Yale University, Dept. of Astronomy |
New Haven, CT |
| October 1987 |
University of Missouri, Dept. of Physics and Astronomy |
St. Louis, MO |
| December 1986 |
University of Maryland, Astronomy Program |
College Park, MD |