1. Department of Biology, East Carolina University, Greenville, North Carolina, USA.
2. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA.
3. Altoona College, Pennsylvania State University, Altoona, Pennsylvania, USA.
4. Department of Physics and Astronomy, Northern Arizona University, Flagstaff, Arizona, USA.
5. New Mexico Tech, Socorro, New Mexico, USA.
6. Arkansas Center for Space and Planetary Sciences, University of Arkansas, Fayetteville, Arkansas, USA.
7. Space Science Institute, Boulder, Colorado, USA.
8. German Aerospace Center, Institute of Planetary Research, Berlin, Germany.
9. Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, USA.
10. Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, UK.
11. Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, Rhode Island, USA.
12. Canadian Space Agency, Saint-Hubert, Quebec, Canada.
13. University of Arizona, Tucson, Arizona, USA.
14. Southwest Research Institute, Boulder, Colorado, USA.
15. Department of Microbiology, University of Tennessee, Knoxville, Tennessee, USA.
16. Department of Microbiology and Cell Science, University of Florida, Merritt Island, Florida, USA.
17. Department of Geological Sciences, The University of Texas at Austin, Austin, Texas, USA.
18. Queen's University, Kingston, Ontario, Canada.
19. Department of Geoscience and NASA Astrobiology Institute, University of Wisconsin, Madison, Wisconsin, USA.
20. University of Toronto, Toronto, Ontario, Canada.
21. U.S. Geological Survey, Flagstaff, Arizona, USA.
22. School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA.