1. Division of Geological and Planetary Sciences; California Institute of Technology; Pasadena California USA
2. Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
3. Goddard Institute for Space Studies; New York New York USA
4. Climate and Space Sciences; University of Michigan; Ann Arbor Michigan USA
5. Center for Space Technology and Research; Georgia Institute of Technology; Atlanta Georgia USA
6. Southwest Research Institute; San Antonio Texas USA
7. Department of Physics; University of Houston; Houston Texas USA
8. Department of Astronomy; Cornell University; Ithaca New York USA