1. Space Science and Engineering Division Southwest Research Institute San Antonio TX USA
2. Laboratoire de Physique Atmosphérique et Planétaire, STAR Institute Université de Liège Liège Belgium
3. Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX USA
4. Department of Astronomy University of California Berkeley CA USA
5. SETI Institute Mountain View CA USA
6. Space Research Corporation Annapolis MD USA
7. Goddard Space Flight Center Greenbelt MD USA
8. Jet Propulsion Laboratory Pasadena CA USA