1. Department of Geological Sciences, University of Florida, Gainesville, Florida, USA.
2. Planetary Environments Laboratory (Code 699), NASA Goddard Space Flight Center, Greenbelt, Maryland, USA.
3. Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, USA.
4. Department of Biology, Georgetown University, Washington, District of Columbia, USA.
5. Science, Technology, and International Affairs Program, Georgetown University, Washington, District of Columbia, USA.
6. CRESST Center for Research Exploration in Space Science and Technology at the University of Maryland, College Park, Maryland, USA.
7. School of Earth and Space Exploration, Arizona State University, Tempe, Arizona, USA.
8. Department of Chemistry, Nano-Science Center, University of Copenhagen, Copenhagen, Denmark.
9. SETI Institute, Mountain View, California, USA.