1. Astrobiology Research Center, Stanford, California, USA
2. National Center for Scientific Research, Biogéosciences, University of Bourgogne, Dijon, France
3. Department of Physics and Astronomy, George Mason University, Fairfax, VA, USA
4. National Centre of Excellence in Geology, University of Peshawar, Peshawar, Khyber Pakhtunkhwa, Pakistan
5. Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
6. Department of Mathematics and Geosciences, University of Trieste, Trieste, Italy
7. Aston University, Birmingham, UK
8. Scripps Institute of Oceanography, Center for Astrophysics and Space Sciences, Departments of Mechanical and Aerospace Engineering, University of California, Berkeley, CA, USA
9. Department Astrophysics, Harvard-Smithsonian (Emeritus), Cambridge, MA, USA