1. University of Hawaii, Department of Physics and Astronomy, Honolulu, Hawaii
2. NASA Ames Research Center, Moffet Field, California
3. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California
4. NASA Goddard Space Flight Center, Greenbelt, Maryland
5. Winona State University, Department of Physics, Winona, Minnesota
6. University of Colorado, Department of Astrophysical and Planetary Sciences, Boulder, Colorado
7. Cornell University, Cornell Center for Astrophysics and Planetary Sciences, Ithaca, New York
8. California Institute of Technology, Division of Physics, Mathematics, and Astronomy, Pasadena, Calif