1. Department of Astronomy, University of Washington, Seattle, Washington.
2. NASA Astrobiology Institute, Virtual Planetary Laboratory Team, Seattle, Washington.
3. School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia.
4. NASA Astrobiology Institute, Alternative Earths Team, Riverside, California.
5. Planetary Systems Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland.
6. NASA Ames Research Center, Exobiology Branch, Mountain View, California.
7. Department of Earth Sciences, University of California, Riverside, California.
8. NASA Postdoctoral Program, Universities Space Research Association, Columbia, Maryland.
9. Blue Marble Space Institute of Science, Seattle, Washington.
10. Planetary Environments Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland.
11. NASA Exoplanet Exploration Program, Jet Propulsion Laboratory/California Institute of Technology, Pasadena, California.
12. German Aerospace Center, Institute of Planetary Research, Extrasolar Planets and Atmospheres, Berlin, Germany.
13. Department of Microbiology and Immunology, School of Medicine, University of Maryland, Baltimore, Maryland.
14. Institute of Marine and Environmental Technology, University System of Baltimore, Maryland.
15. Carl Sagan Institute, Cornell University, Ithaca, New York.
16. Cornell Center for Astrophysics and Planetary Science, Cornell University, Ithaca, New York.
17. Department of Astronomy, The University of Tokyo, Tokyo, Japan.
18. Astrobiology Center, NINS, Tokyo, Japan.
19. National Astronomical Observatory of Japan, NINS, Tokyo, Japan.