1. University of Maryland/NASA Goddard Spaceflight Center
2. University of America/NASA Goddard Space Flight Center
3. CRPG CNRS/Université de Lorraine, France
4. Rutgers University
5. Catholic University of America/NASA Goddard Space Flight Center
6. Univ. of Maryland College Park / NASA Goddard Space Flight Center
7. University of Notre Dame
8. NASA Goddard Space Flight Center
9. Lunar & Planetary Institute/Universities Space Research Association
10. Planetary Science Institute
11. Institut für Planetologie Westfälische Wilhelms-Universität Münster