1. Research Group Astrobiology, Radiation Biology Department, German Aerospace Center (DLR), Institute of Aerospace Medicine, Köln, Germany.
2. GEMM—Group for Extreme and Marine Microbiology, Department of Biology, Edge Hill University, Ormskirk, United Kingdom.
3. Department of Physics and Astronomy, Astrophysical Observatory of Arcetri, National Institute for Astrophysics (INAF), Florence, Italy.
4. Science Connect–European Science Foundation (ESF), Strasbourg, France.
5. Department of Physics and Astronomy, Wheaton College, Massachusetts, Norton, Massachusetts.
6. Committee on Space Research (COSPAR), Montpellier, France.
7. Space Technology Ireland Ltd., Maynooth, Ireleand.
8. Department of Internal Medicine, Medical University of Graz, Graz, Austria.
9. Faculty of Science, Technology, Engineering & Mathematics, School of Environment, Earth & Ecosystem Sciences, The Open University, Milton Keynes, United Kingdom.
10. Department of Applied Sciences, Northumbria University, Newcastle, United Kingdom.
11. Faculty of Engineering, Department of Earth Science & Engineering, Imperial College, London, United Kingdom.
12. Independent Consultant for the US National Academies of Sciences (NAS), Washington, District of Columbia.
13. Carl Sagan Center, SETI, Mountain View, California.
14. Institut für Experimentelle und Angewandte Physik, Abteilung Extraterrestrische Physik, Christian-Albrechts-Universität zu Kiel, Kiel, Germany.
15. Eurospace, Paris, France.