1. Jet Propulsion Laboratory; California Institute of Technology
2. Open University
3. University of Tennessee
4. ESTEC
5. IAPS - INAF
6. Australian National University
7. ASI
8. German Research Center for Geosciences
9. SETI Institute
10. Lawrence Livermore National Laboratory
11. Deltion Innovations
12. OA-Arcetri
13. ETH Zurich
14. University of Auckland
15. University of Cincinnati
16. Universite Libre de Bruxelles
17. NASA Ames Research Center
18. University of Guelph
19. California Institute of Technology
20. Arizona State University
21. Lulea University of Technology
22. Southern Illinois University
23. NASA Johnson Space Center
24. NASA Goddard Space Flight Center
25. Glasgow University
26. University of Nevada; Las Vegas
27. University of Alberta
28. Purdue University
29. Florida State University
30. University of Muenster
31. NASA Glenn Research Center
32. California State-Northridge
33. University of Nantes-LPG
34. University of Colorado
35. Stony Brook University
36. Western University
37. Paris Institute of Earth Physics
38. Brown University
39. Universita d'Annunzio
40. University of Paris (UPEC)
41. German Aerospace Center (DLR)
42. Imperial College
43. University of California; San Diego
44. University of New Mexico
45. University of California; Berkeley
46. Research Institutes of Sweden; Stockholm
47. Natural History Museum; London
48. Carnegie Institution of Washington
49. University of Arizona
50. Utrecht University
51. Oxford University
52. Tokyo Institute of Technology
53. UNSW Sydney
54. Massachusetts Institute of Technology
55. University of Oslo
56. CNRS-Orleans
57. NASA Kennedy Space Center
58. Senckenberg Research Institute; Frankfurt
59. Centro de Astrobiologia