1. IRAP CNRS (France)
2. Ctr. National d'Etudes Spatiales (France)
3. SRON Netherlands Institute for Space Research (Netherlands)
4. INAF, Istituto di Astrofisica e Planetologia Spaziali (Italy)
5. Instituto de Fisica de Cantabria (Spain)
6. Univ. of Helsinki (Finland)
7. NASA Goddard Space Flight Ctr. (United States)
8. Ctr. de Astrobioloìga, CSIC, INTA (Spain)
9. Institute of Space and Astronautical Science (Japan)
10. Univ. of Geneva (Switzerland)
11. Univ. of Liège (Belgium)
12. Nicolaus Copernicus Astronomical Ctr. (Poland)
13. ECAP, Univ. of Erlangen-Nüremberg (Germany)
14. Univ. degli Studi di Palermo (Italy)
15. Univ. Grenoble Alpes (France)
16. Lab. AIM, CEA, CNRS (France)
17. INAF, Osservatorio Astronomico di Roma (Italy)
18. Univ. of Genova (Italy)
19. Astroparticule et Cosmologie (France)
20. Univ. of Groningen (Netherlands)
21. INAF - IASF Milano (Italy)
22. Centrum Badan Kosmicznych (Poland)
23. Lab. AIM, Univ. Paris Diderot, CNRS (France)
24. AstroParticule et Cosmologie, Univ. Paris Diderot (France)
25. Ctr. Spatial de Liège (Belgium)
26. Leiden Univ. (Netherlands)
27. Japan Aerospace Exploration Agency (Japan)
28. INAF - IASF Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
29. Univ. of Amsterdam (Netherlands)
30. Univ. College London (United Kingdom)
31. Hiroshima Univ. (Japan)
32. Ctr. for Theoretical Physics (Poland)
33. Univ. of Michigan (United States)
34. INAF-Osservatorio Astronomico di Roma (Italy)
35. INAF - Osservatorio Astronomico di Palermo G.S.Vaiana (Italy)
36. Univ. de Alicante (Spain)
37. INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
38. Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
39. Instituto de Física de Cantabria (Spain)