1. Department of Earth and Planetary Sciences; Washington University in Saint Louis; Missouri USA
2. School of Earth and Space Exploration; Arizona State University; Tempe Arizona USA
3. Space Science Institute; Boulder Colorado USA
4. Department of Physics; University of Guelph; Guelph Ontario Canada
5. Division of Geological and Planetary Sciences; California Institute of Technology; Pasadena California USA
6. U.S. Geological Survey; Astrogeology Science Center; Flagstaff Arizona USA
7. Department of Organismic and Evolutionary Biology; Harvard University; Cambridge Massachusetts USA
8. Department of Geosciences; Stony Brook University; Stony Brook New York USA
9. NASA Johnson Space Center; Houston Texas USA
10. Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
11. NASA Goddard Space Flight Center; Greenbelt Maryland USA
12. Department of Astronomy; Cornell University; Ithaca New York USA
13. School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA